UM2001P

UM2001P UNIONSEMI | Alldatasheet

Document overview

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Technical content

Features

 SPI, MICROWIRE, and I 2C Level Translation  Low-Voltage ASIC Level Translation  Smart Card Readers  Cell-phone Cradles  Portable POS Systems  Portable Communication Devices  Low-Cost Serial Interfaces  Cell-Phones  GPS  Telecommunications Equipment  Consumer Electronics  Household Appliances  Provides bidirectional voltage translation with no direction pin  Less than 1.5 ns maximum propagation delay  Low 3.5Ω ON -state connection between input and output ports provides less signal distortion  5V toleran t I/O ports to support mixed-mode signal operation  High-impedance A and B pins for EN=LOW  Latch up free operation  Flow through pinout for ease of printed-circuit board trace routing  ESD protection exceeds: 4kV HBM per JESD22-A114  Package offered: SOT363 Pin Configurations Top View 3 4 VCCA GND EN VCCB B UA3 M 1 2 3 456 UA3 M M: Month Code UM2001P SOT363

http://www.union-ic.com Rev.03 Dec.2014 2/10 UM2001P Pin Description Pin Number Symbol Function

1 A Low-voltage side; connected to V CCA through a pull -up

2 VCCA Low-voltage side reference supply voltage for A

3 GND Ground (0V)

4 EN Switch enable input; connected to V CCB and pulled -up

5 VCCB High-voltage side reference supply voltage for B

6 B High-voltage side; connec ted to V CCB through a pull -up

Ordering Information

Part Number Packaging Type Marking Code Shipping Qty UM2001P SOT363 UA3 3000pcs/7Inch Tape & Reel Absolute Maximum Ratings (Note 1) Over operating free-air temperature range (unless otherwise noted) Symbol Parameter Value Unit VCCA Reference Voltage (A) -0.5 to +6 V VCCB Reference Voltage (B) -0.5 to +6 V VI Input Voltage -0.5(Note 2) to +6 V VI/O Voltage on an input/output pin -0.5(Note 2) to +6 V Ich Channel Current (DC) +128 mA IIK Input Clamp Current VI＜0V -50 mA Tstg Storage Temperature -65 to +150 °C Note 1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Note 2: The input and input/output negative voltage ratings may be exceeded if the input and input/output clamp current ratings are observed.

http://www.union-ic.com Rev.03 Dec.2014 3/10 UM2001P Recommended Operating Conditions Symbol Parameter Conditions Min Max Unit VI/O Voltage on an input/output pin A, B 0 5.5 V VCCA (Note 3) Reference Voltage (A) VCCA 0 5.5 V VCCB (Note 3) Reference Voltage (B) VCCB 0 5.5 V VI(EN) Input Voltage on pin EN 0 5.5 V Isw(pass) Pass Switch Current 64 mA Tamb Ambient Temperature Operating in free-air -40 +85 °C Note 3: VCCA ≤ VCCB −1 V for best results in level shifting applications.

Electrical Characteristics

Tamb = −40 °C to +85 °C, unless otherwise specified. Symbol Parameter Conditions Min Typ (Note 4) Max Unit VIK Input Clamping V oltage II = −18mA; VI(EN) = 0V -1.2 V IIH HIGH-level Input Current VI= 5V; VI(EN) = 0V 5 μA Ci(EN) Input Capacitance on pin EN VI= 0V or 3V 12 pF Cio(off) Off-state input/output capacitance A, B; VO= 0V or 3V ; VI(EN) = 0V 10 12 pF Cio(on) On-state input/output capacitance A, B; VO= 0V or 3V ; VI(EN) = 3V 8 12.5 (Note 5) pF Ron ON-state resistance (Note 6) A, B; VI = 0V; IO = 64mA; VI(EN) = 4.5V(Note 7) 1 2.5 5.0 Ω A, B; VI = 2.4V; IO = 15mA; VI(EN) = 4.5V 4.5 7.5 Note 4: All typical values are at Tamb = 25° C. Note 5: Not production tested, maximum value based on characterization data of typical parts. Note 6: Measured by the voltage drop between the A and B terminals at the indicated current through the switch. ON -state resistance is determined by the lowest voltage of the two terminals. Note 7: Guaranteed by design.

http://www.union-ic.com Rev.03 Dec.2014 4/10 UM2001P Switching Characteristics (translating down) Over recommended operating free -air temperature range(unless otherwise noted). Values guaranteed by design. Symbol Parameter Test Conditions CL=50pF CL=30pF CL=15pF Unit Min Max Min Max Min Max VI(EN) = 3.3V; VIH = 3.3V; VIL = 0V; VM =1.15V(see Figure 1). tPLH LOW to HIGH propagation delay from (input) B to (output) A 0 3.5 0 2.7 0 2.2 ns tPHL HIGH to LOW propagation delay 0 3.5 0 3.0 0 2.3 ns VI(EN) =2.5V; VIH = 2.5V; VIL = 0V; VM = 0.75V (see Figure 1). tPLH LOW to HIGH propagation delay from (input) B to (output) A 0 3.5 0 2.7 0 2.2 ns tPHL HIGH to LOW propagation delay 0 4.0 0 3.0 0 2.3 ns Switching Characteristics (translating up) Over recommended operating free -air temperature range(unless otherwise noted). Values guaranteed by design. Symbol Parameter Test Conditions CL=50pF CL=30pF CL=15pF Unit Min Max Min Max Min Max tPLH LOW to HIGH propagation delay from (input) A to (output) 0 3.35 0 2.5 0 2.0 ns tPHL HIGH to LOW propagation delay 0 4.35 0 3.25 0 2.4 ns tPLH LOW to HIGH propagation delay from (input) A to (output) 0 3.35 0 2.5 0 2.0 ns tPHL HIGH to LOW propagation delay 0 4.5 0 3.5 0 2.5 ns

http://www.union-ic.com Rev.03 Dec.2014 5/10 UM2001P CL S2(OPEN) RL VTT from output under test input output VM VIH VIL VOH VOL VM VM VM a. Load circuit b. Timing diagram; high-impedance scope probe used S1 = translating up; S2 = translating down. CL includes probe and jig capacitance. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz; Zo = 50 Ω; tr ≤ 5 ns; tf ≤ 5 ns. The outputs are measured one at a time, with one transition per measurement. Fig 1. Load circuit for outputs Applications Information Detail Description The UM2001P is a bidirectional voltage level translator operational from 1.0V to 3.6V (VCCA) and 1.8V to 5.5V (V CCB), which allow s bidirectional voltage translations between 1.0V and 5V without the need for a direction pin in open-drain or push-pull applications. When the A or B port is LOW, the clamp is in the ON-state and a low resistance connection exists between the A and B ports. The low ON -state resistance (Ron) of the switch allows connections to be made with minimal propagation delay. Assuming the higher voltage is on the B port when the B port is HIGH, the voltage on the A port is limited to the voltage set by VCCA. When the A port is HIGH, the B port is pulled to the drain pull -up supply voltage (V pu(D)) by the pull -up resistors. This functionality allows a seamless translation between higher and lower voltages selected by the user without the need for directional control. When EN is HIGH, the translator switch is on, and the A I/O is connected to the B I/O, allowing bidirectional data flow between ports. When EN is LOW, the translator switch is off, and a high-impedance state exi sts between ports. The EN input circuit is designed to be supplied by VCCB. To ensure the high-impedance state during power-up or power-down, EN must be LOW. All channels have the same electrical characteristics and there is minimal deviation from one output to another in voltage or propagation delay. This is a benefit over discrete transistor voltage translation solutions, since the fabrication of the switch is symmetrical.

http://www.union-ic.com Rev.03 Dec.2014 6/10 UM2001P Enable and Disable Vcc I2C-BUS MASTER I/O GND UM2001P SW GND RPU A VCCA VCCA=1.8V(1) Vcc I2C-BUS DEVICE I/O GND EN VCCB 200kΩ RPU B Vpu(D)=3.3V(1) (1) The applied voltages at VCCA and Vpu(D) should be such that VCCB is at least 1 V higher than VCCA for best translator operation. Fig 2. Typical application circuit (switch always enabled) Vcc I2C-BUS MASTER I/O GND UM2001P SW GND RPU A VCCA VCCA=1.8V(1) Vcc I2C-BUS DEVICE I/O GND EN VCCB 200kΩ RPU B Vpu(D)=3.3V(1) (1) In the Enabled mode, the applied enable voltage VI(EN) and the applied voltage at VCCA should be such that VCCB is at least 1 V higher than VCCA for best translator operation. Fig 3. Typical application circuit (switch enable control) on off 3.3V enable signal(1)

http://www.union-ic.com Rev.03 Dec.2014 7/10 UM2001P Bidirectional translation For the bidirectional clamping configuration (higher voltage to lower voltage or lower voltage to higher voltage), the EN input must be connected to V CCB and both pins pulled to HIGH side Vpu(D) through a pull-up resistor (typically 200kΩ). This allows VCCB to regulate the EN input. A filter capacitor on V CCB is recommended. The master output driver can be totem pole or open-drain (pull-up resistors may be required) and the slave device output can be totem pole or open-drain (pull-up resistors are required to pull the B output to V pu(D)). However, if either output is totem pole, data must be unidirectional or the outputs must be 3 -stateable and be controlled by some direction -control mechanism to prevent HIGH -to-LOW contentions i n either direction. If both outputs are open-drain, no direction control is needed. The reference supply voltage (V CCA) is connected to the processor core power supply voltage. When VCCB is connected through a 200 kΩ resistor to a 3.3V to 5.5 V Vpu(D) power supply, and VCCA is set between 1.0 V and (V pu(D) −1V), the output of A has a maximum output voltage equal to VCCA, and the output of B has a maximum output voltage equal to Vpu(D). Application operating conditions Refer to Figure 2 Symbol Parameter Conditions Min Typ (Note 8) Max Unit VCCB Reference Voltage (B) VCCA + 0.6 2.1 5 V VI(EN) Input Voltage on pin EN VCCA + 0.6 2.1 5 V VCCA Reference Voltage (A) 0 1.5 4.4 V Isw(pass) Pass Switch Current 14 mA Iref Reference Current Transistor 5 μA Tamb Ambient Temperature Operating in free-air -40 +85 °C Note 8: All typical values are at Tamb = 25 ° C. Sizing pull-up resistor The pull-up resistor value needs to limit the current through the pass transistor when it is in the ON state to about 15mA. This ensures a pass voltage of 260mV to 350 mV. If the current through the pass transistor is higher than 15 mA, the pass voltage also is higher in the ON state. To set the current through each pass transistor at 15mA, the pull-up resistor value is calculated as: A VVR Dpu PU 015.0 35.0)(  The table below summarizes resistor reference voltage s and currents at 15mA, 10 mA, and 3mA. The resistor values shown in the +10 % column or a larger value should be used to ensure that the pass voltage of the transistor would be 350 mV or less. The external driver must be able to sink the total current from the resistors on both sides of the UM2001P device at 0.175V, although the 15mA only applies to current flowing through the UM2001P device.

http://www.union-ic.com Rev.03 Dec.2014 8/10 UM2001P Pull-up resistor values Calculated for VOL = 0.35V; assumes output driver VOL = 0.175V at stated current. Vpu(D) Pull-up resistor value (Ω) 15mA 10mA 3mA Nominal +10 % (Note 9) Nominal +10 % (Note 9) Nominal +10 % (Note 9) 5V 310 341 465 512 1550 1705 3.3V 197 217 295 325 983 1082 2.5V 143 158 215 237 717 788 1.8V 97 106 145 160 483 532 1.5V 77 85 115 127 383 422 1.2V 57 63 85 94 283 312 Note 9: +10 % to compensate for VCC range and resistor tolerance.

http://www.union-ic.com Rev.03 Dec.2014 9/10 UM2001P

Package Information

e D b θ L E A c Top View End View Side View 1 2 3 456 DIMENSIONS Symbol MILLIMETERS INCHES Min Max Min Max A 0.900 1.100 0.035 0.043 A1 0.000 0.100 0.000 0.004 A2 0.900 1.000 0.036 0.039 b 0.100 0.350 0.004 0.014 c 0.080 0.220 0.003 0.009 D 1.800 2.200 0.071 0.087 E 1.150 1.350 0.045 0.053 E1 2.000 2.450 0.079 0.096 e 0.650REF 0.026REF e1 1.200 1.400 0.047 0.055 L 0.525REF 0.021REF L1 0.260 0.460 0.010 0.018 θ 0° 8° 0° 8° Land Pattern 1.30 0.35 0.80 1.94 NOTES: 1. Compound dimension: 2.00× 1.25; 2. Unit: mm; 3.General tolerance ± 0.05mm unless otherwise specified; 4. The layout is just for reference. Tape and Reel Orientation UA3 M

http://www.union-ic.com Rev.03 Dec.2014 10/10 UM2001P IMPORTANT NOTICE The information in this document has been carefully reviewed and is believed to be accurate. Nonetheless, this document is subject to change without notice. Union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or t o keep current the contained information, or to notify a person or organization of any update. Union reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. Union Semiconductor, Inc Add: Unit 606, No.570 Shengxia Road, Shanghai 201210 Tel: 021-51093966 Fax: 021-51026018 Website: www.union-ic.com