TPT29306

TPT29306 3PEAK | Alldatasheet

Document overview

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• PDF pages: 18

Technical content

Features

⚫ Dual bidirectional Translator for SDA and SCL Lines in I2C Applications and SMBus Compatible ⚫ Support multi -mode: Standard -mode (SM), Fast - mode (FM), and Fast-mode Plus (FM+) ⚫ Less than 1.5 ns (max) Delay to Accommodate S M and FM I2C devices and multiple masters ⚫ Allows Voltage-Level Translation Between ◼ 3.3V VREF1 and 5V VREF2 ◼ 2.5V VREF1 and 3.3V or 5 V VREF2 ◼ 1.8V VREF1 and 2.5V, 3.3V, or 5V VREF2 ◼ 1.2V VREF1 and 1.8V, 2.5V, 3.3V, or 5V VREF2 ⚫ Provides bidirectional voltage translation with no direction pin ⚫ High-impedance SCL1, SDA1, SCL2 and SDA2 pins for EN = LOW ⚫ Latch-Up performance exceeds 400 mA per JESD ⚫ ESD Protection Exceeds JESD 22 ◼ 4000-V Human-Body Model ◼ 1000-V Charged-Device Model

Applications

⚫ I2C, SMBus, PMBus, MDIO, UART, Low -Speed SDIO, GPIO, and Other Two-Signal Interfaces ⚫ Servers/Storages ⚫ Routers (Telecom Switching Equipment) ⚫ Personal Computers/Consumer handsets ⚫ Industrial Automation

Description

The TPT29306 device is a dual bidirectional I2C and SMBus voltage-level translator with an enable (EN) input, The 3.5Ω Ron make the minimal propagation delay <1.5ns. If EN is high, the translator switch is ON, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, will allow bidirectional data flow between ports. If EN is low, the translator switch is off, and a high -impedance state exists between ports to isolate both sides. The TPT29306 can also be used to run two buses, one is 400 kHz and the other is 100 kHz . If the two buses are operating at different frequency, the 100 kHz bus must be isolated when the other 400 kHz bus is required. If the master is running at 400 kHz, the maximum system frequency may be less than 400 kHz because of the delays added by the translator. As with the standard I2C-bus system, pull-up resistors are required in both sides, to provide the logic HIGH levels on the translator’s bus. The device is designed to work with SM, FM and FM+ I2C-bus devices in addition to SMBus devices. The maximum frequency is dependent on the RC time constant, but generally supports > 2 MHz. TPT29306 is available in MSOP8, VSSOP8, DFN1.4X1- 8L and DFN3X4 -8L(none e-pad) package, and is characterized from –40°C to +85°C. Function block SCL2 SDA2 SCL1 SDA1 VREF1 GND VREF2 SW SW EN

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator

Revision History

2019/4/12 Rev. Pre 0.1 Initial Version 2019/9/7 Rev. Pre 0.2 Add DFN3X4-8L No e-pad package 2019/9/25 Rev. Pre 0.3 Add application notes 2019/12/23 Rev. Pre 0.4 Add ESD data 2020/4/20 Rev. Pre 0.5 Add test data 2020/10/26 Rev. Pre 0.6 Add VSSOP8 package information 2021/5/6 Rev. A.0 Release version 2021/12/9 Rev. B Update the order information 2022/2/9 Rev. B.1 Update the tape and reel information 2022/5/8 Rev. B.2 Update the MSL of TPT29306L1-DFER from MSL3 to MSL1

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator Pin Configuration and Functions Pin Functions Pin name Pin No I/O Description GND 1 — Ground, 0 V VREF1 2 I Low-voltage-side reference supply voltage for SCL1 and SDA1 SCL1 3 I/O Serial clock, low-voltage side SDA1 4 I/O Serial data, low-voltage side SDA2 5 I/O Serial data, high-voltage side SCL2 6 I/O Serial clock, high-voltage side VREF2 7 I High-voltage-side reference supply voltage for SCL2 and SDA2 , connect to power supply through external 200kΩ pull up resistor EN 8 I Switch enable input, directly connect to VREF2 TPT29306L1-DFGR (DFN1.4X1-8L) TPT29306L1-DFER (DFN3X4-8L) TPT29306-VS1R (MSOP8, 3.0 x 3.0 x 0.9 mm) TPT29306L1-VS3R (VSSOP8, 2.0 x 2.3 x 1.0 mm)

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator Absolute Maximum Ratings (1) Parameter MIN MAX UNIT VREF1 DC reference voltage range –0.5 7 V VREF2 DC reference bias voltage range –0.5 7 V VI Input voltage range(2) –0.5 7 V VI/O Input/output voltage range(2) –0.5 7 V Continuous channel current 128 mA IIK Input clamp current V I < 0 –50 mA Tj(max) Maximum junction temperature 125 °C Tstg Storage temperature range –65 150 °C * Note: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to an y Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. (1) This data was taken with the JEDEC low effective thermal conductivity test board. (2) This data was taken with the JEDEC standard multilayer test boards. ESD, Electrostatic Discharge Protection Symbol Parameter Condition Minimum Level Unit HBM Human Body Model ESD ANSI/ESDA/JEDEC JS-001 4 kV CDM Charged Device Model ESD ANSI/ESDA/JEDEC JS-002 1 kV Thermal Information Package Type θJA θJC Unit MSOP8 205 45 °C/W VSSOP8 210 82 °C/W DFN1.4X1.0-8L 261 152 °C/W DFN3X4-8L 71 29 °C/W Recommended Operating Conditions Symbol Description MIN MAX UNIT VI/O Input/output voltage SCL1, SDA1, SCL2, SDA2 0 5.5 V VREF1 (1) Reference voltage 0 5.5 V VREF2 (1) Reference voltage 0 5.5 V EN Enable input voltage 0 5.5 V IPASS Pass switch current 64 mA TA Operating ambient temperature –40 85 °C (1) To support translation, VREF1 suggest to be 0.6V lower than VREF2. Please see the Application information as reference.

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator

Electrical Characteristics

All test condition is VDD = 3.3V, TA = +25°C, RL = 150Ω to GND Symbol Description Test Conditions Min Typ Max Unit VIK Input clamp voltage note1 II = –18 mA, EN = 0 V –1.2 V IIH Input leakage current VI = 5 V, EN = 0 V 5 μA Ci(EN) Input capacitance VI = 3 V or 0 11 pF Cio(off) Off capacitance, SCLn, SDAn VO = 3 V or 0, EN = 0 V 4 6 pF Cio(on) On capacitance, SCLn, SDAn VO = 3 V or 0, EN = 3 V 10.5 12.5 pF RON On-state resistance, SCLn, SDAn VI = 0 IO = 64 mA EN = 4.5 V 3.5 5.5 Ω EN = 3 V 4.7 7 EN = 2.3 V 6.3 9.5 VI = 0 IO = 15 mA EN = 1.5 V 25.5 32 VI = 2.4 V(3) IO = 15 mA EN = 4.5 V 1 6 15 EN = 3 V 20 60 140 VI = 1.7 V(3) IO = 15 mA EN = 2.3 V 20 60 140 Note1: symbol ‘-‘ means direction, sink current 18mA, input voltage 1.2V, typical value: input voltage 0.8V Switching Characteristics AC Performance, TA = +25°C (Translating Down) (Fig. 1) Parameter From (Input) To (Output) CL = 50 pF CL = 30 pF CL = 15 pF Unit Min Max Min Max Min Max tPLH SCL2 or SDA2 SCL1 or SDA1 0 0.8 0 0.6 0 0.3 ns tPHL 0 1.2 0 1 0 0.5 Parameter From (Input) To (Output) CL = 50 pF CL = 30 pF CL = 15 pF Unit Min Max Min Max Min Max tPLH SCL2 or SDA2 SCL1 or SDA1 0 0.8 0 0.6 0 0.3 ns tPHL 0 1.2 0 1 0 0.5 Switching Characteristics AC Performance, TA = +25°C (Translating Up) (Fig. 6) Parameter From (Input) To (Output) CL = 50 pF CL = 30 pF CL = 15 pF UNIT Min Max Min Max Min Max tPLH SCL2 or SDA2 SCL1 or SDA1 0 0.9 0 0.6 0 0.4 ns tPHL 0 1.4 0 1.1 0 0.7 Parameter From (Input) To (Output) CL = 50 pF CL = 30 pF CL = 15 pF UNIT Min Max Min Max Min Max tPLH SCL2 or SDA2 SCL1 or SDA1 0 0.9 0 0.6 0 0.4 ns tPHL 0 1.4 0 1.1 0 0.7

S1 = translating up; S2 = translating down. includes probe and jig capacitance. The outputs are measured one at a time, with one transition per measurement. Figure 1. Load circuit for outputs

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator Theory of Operation The TPT29306 device is a dual bidirectional I2C and SMBus voltage-level translator with an enable (EN) input and operates without use of a direction pin. The voltage supply range for V REF1 is 1.0 V to 3.6 V and the supply range for VREF2 is 1.65 V to 5.5 V. The TPT29306 device can also be used to run two buses, one at 400 kHz frequency and the other at 100 kHz frequency. If the two buses are operating at different frequencies, the 100 kHz bus must be isolated by using the EN pin when the 400 kHz operation of the main bus is required. If the master is running at 400 kHz, the maximum system operating frequency may be less than 400 kHz because of the delays added by the level translator. In I2C applications, the bus capacitance limit of 400 pF decides the number of devices and bus length. The capacitive load on both sides of the TPT29306 device must be calculated together, including th e total load of the system, then make sure the sum of both sides is under 400 pF. Both the SDA and SCL channels of the TPT29306 device have the same electrical characteristics, and there is minimal deviation from one output to another in voltage or propagation delay. Compared to the discrete transistor voltage - translation solutions, TPT29306 is a good benefit because of the symmetric design and accurate manufacture. The level shifter provides excellent ESD protection to lower-voltage devices and also protects low-level ESD devices. Enable (EN) Pin The TPT29306 device is an open-drain circuit in which the gate of the transistors is controlled by the voltage on the EN pin. In Figure 2 the TPT29306 device is always enabled when power is applied to V REF2. In Figure 3 , the device is enabled when a control signal from a processor is in a logic-high state. Voltage Translation The primary feature of the TPT29306 device is translating voltage from an I2C bus VREF1 to I2C bus VREF2. Side-1 is referenced to VREF1 up to an I2C bus referenced to VDPU(VCC1), and side-2 VREF2 is connected through a 200 kΩ pullup resistor. Translation on a standard, open-drain I2C bus is achieved by simply connecting pullup resistors from SCL1 and SDA1 to VREF1, and connecting pullup resistors from SCL2 and SDA2 to VCC2. Device Function table Input EN(1) Translator Function H SCL1 = SCL2, SDA1 = SDA2 L Disconnect (1) The SCL switch conducts if EN is ≥ 1 V higher than SCL1 or SCL2. The same is true of SDA.

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator

Application information

General Applications of I2C As with the standard I2C system, pullup resistors are required to provide the logic-high levels on the translator bus. The size of these pullup resistors depends on the system, but each side of the repeater must have a pullup resistor. The device is designed to work with standard -mode and fast -mode I2C devices, in addition to SMBus devices. Standard - mode I2C devices only specify 3 mA in a generic I2C system where standard-mode devices and multiple masters are possible. Under certain conditions, high termination currents can be use d. When the SDA1 or SDA2 port is low, the clamp is in the ON state, and a low -resistance connection exists between the SDA1 and SDA2 ports. Assuming the higher voltage is on the SDA2 port when the SDA2 port is high, the voltage on the SDA1 port is limited to the voltage set by VREF1. When the SDA1 port is high, the SDA2 port is pulled to the pullup supply voltage of the drain by the pullup resistors. This functionality allows a seamless translation between higher and lower voltages selected by the user, without the need for directional control. The SCL1 -SCL2 channel also functions in the same way as the SDA1 -SDA2 channel. Typical Application Figure 2 and Figure 3 show how these pullup resistors are connected in a typical application, as well as two options for connecting the EN pin. Power Supply Requirements For supplying power to the TPT29306 device, the V REF1 pin can be connected directly to a power supply. The V REF2 pin MUST be connected to the VCC2 power supply through a 200 k Ω resistor. Failure to have a high impedance resistor between VREF2 and VDPU results in excessive current draw and unreliable device operation. It is also worth noting, that in order to support voltage translation, the TPT29306 MUST have the EN and VREF2 pins shorted and then pulled up to VCC2 through a high-impedance resistor (200 kΩ). Bidirectional Voltage Translation For the bidirectional clamping configuration, could be higher voltage to lower voltage or lower voltage to higher voltage, the EN input must be connected to V REF2 and both pins pulled to high -side power supplier through a pullup resistor (typically 200 k Ω as recommend above). This allows V REF2 to regulate the EN input and a 100 pF filter capacitor connected to VREF2 is recommended. The I2C bus master output can be push-pull, if it is open-drain output then it should connect to pullup resistors. However, if either output is push-pull, data(SDA) must be unidirectional or the outputs must be 3 -state capable and be controlled by some direction -control circuit to prevent high -to-low competition in either direction. If both outputs are open-drain, no direction control is needed. The reference supply voltage (V REF1) is connected to the core power -supply voltage of the I2C master, and V REF2 is connect to the I2C slave through 200 kΩ pullup resistor. Design Requirements Min Typ(1) Max UNIT VREF2 Reference voltage VREF1 + 0.6 2.1 5 V EN Enable input voltage VREF1 + 0.6 2.1 5 V VREF1 Reference voltage 1.2 1.5 4.4 V

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator Tape and Reel Information Order Number Package D1 W1 A0 B0 K0 P0 W0 Pin1 Quadrant TPT29306- VS1R TPT29306L1- VS3R TPT29306L1- DFGR DFN1.4X1.0- 180 13.1 1.6 2 0.85 4 8 Q1 TPT29306L1- DFER DFN3X4-8L 330 12.8 3.3 4.3 1 8 12 Q2

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator Package Outline Dimensions VS1R (MSOP8)

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator Package Outline Dimensions VS3R (VSSOP8)

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator Package Outline Dimensions DFGR (DFN1.4X1.0-8L )

www.3peak.com Rev. B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator Package Outline Dimensions DFER (DFN3X4-8L, no e-pad)

www.3peak.com Rev.B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage -Level Translator Order Information Order Number Operating Temperature Range Package Marking Information MSL Transport Media, Quantity Eco Plan TPT29306-VS1R -40 to 85°C 8-Pin MSOP 9306 MSL3 Tape and Reel, 3000 Green TPT29306L1-VS3R -40 to 85°C 8-Pin VSSOP8 9306 MSL1 Tape and Reel, 3000 Green TPT29306L1-DFGR -40 to 85°C 8-Pin DFN1.4X1.0 T26 MSL1 Tape and Reel, 4000 Green TPT29306L1-DFER -40 to 85°C 8-Pin DFN3X4 No e-pad

9306 MSL1 Tape and Reel, 3000 Green

(1). Future product, contact 3PEAK factory for more information and sample (2). Green: 3PEAK defines "Green" to mean RoHS compatible and free of halogen substances.

www.3peak.com Rev.B.2 TPT29306 Dual Bidirectional I2C Bus and SMBus Voltage -Level Translator IMPORTANT NOTICE AND DISCLAIMER Copyright© 3PEAK 2012-2023. All rights reserved. Trademarks. Any of the 思瑞浦 or 3PEAK trade names, trademarks, graphic marks, and domain names contained in this document /material are the property of 3P EAK. You may NOT reproduce, modify, publish, transmit or distribute any Trademark without the prior written consent of 3PEAK. Performance Information. Performance tests or performance range contained in this document/material are either results of design simulation or actual tests conducted under designated testing environment. Any variation in testing environment or simulation environment, including but not limited to testing method, testing process or testing temperature, may affect actual performance of the product. Disclaimer. 3PEAK provides technical and reliability data (including data sheets), design resources (including reference designs), application or other design recommendations, networking tools, security information and other resources "As Is". 3PEAK makes no warranty as to the absence of defects, and makes no warranties of any kind, express or implied, including without limitation, implied warranties as to merchantability, fitness for a particular purpose or non -infringement of any third -party’s intellectual property rights. Unless otherwise specified in writing, products supplied by 3PEAK are not designed to be used in any life-threatening scenarios, including critical medical applications, automotive safety-critical systems, aviation, aerospace, or any situations where failure could result in bodily harm, loss of life, or significant property damage. 3PEAK disclaims all liability for any such unauthorized use.