FXL4245_10 FAIRCHILD | Alldatasheet
Document overview
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Technical content
Features
Bi-Directional Interface between Two Levels from 1.1V to 3.6V Fully Configurable, Inputs Track VCC Level Non-Preferential Power-up; Either VCC May Be Powered-up First Outputs Remain in 3-State until Active VCC Level is Reached Outputs Switch to 3-State if Either VCC is at GND Power-Off Protection Control Inputs (T/R, OE) Levels are Referenced To VCCA Voltage Packaged in 24-Pin MLP ESD Protection Exceeds: - 4kV Human Body Model (per JESD22-A114 & Mil Std 883e 3015.7) - 8kV Human Body Model I/O to GND (per JESD22-A114 & Mil Std 883e 3015.7) - 1kV Charge Device Model (per ESD STM 5.3) - 200V Machine Model (per JESD22-A115 & ESD STM5.2)
Description
The FXL4245 is a configurable dual-voltage-supply translator designed for bi-dir ectional voltage translation of signals between two voltage levels. The device allows translation between voltages as high as 3.6V to as low as 1.1V. The A port tracks the V CCA level and the B port tracks the V CCB level. Both ports are designed to accept supply voltage levels from 1.1V to 3.6V. This allows for bi-directional voltage translation over a variety The device remains in 3-state until both V CCs reach active levels, allowing either V CC to be powered-up first. The device also contains power-down control circuits that place the device in 3-state if either V CC is removed. The Transmit/Receive (T/R) input determines the direction of data flow through the device. The OE input, when HIGH, disables both the A and B ports by placing them in a 3-state condition. The FXL4245 is designed with the control pins (T/R and OE) supplied by V CCA.
Ordering Information
Part Number Package Packing Method FXL4245MPX 24-Pin Molded Leadless Package (MLP), JEDEC MO-220, 3.5 x 4.5mm Tape and Reel
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com FXL4245 • Rev. 1.0.3 2 FXL4245 — Low-Voltage, Dual-Supply, 8-Bit, Signal Translator Pin Configuration Figure 1. Pin Configur ation (Top Through View)
1 V CCA Side-A Power Supply
2 T/R Transmit / Receive Input
22 OE Output Enable Input
LOW Voltage Level LOW Voltage Level Bus B Data to Bus A LOW Voltage Level HIGH Voltage Level Bus A Data to Bus B HIGH Voltage Level Don’t Care 3-State
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com FXL4245 • Rev. 1.0.3 3 FXL4245 — Low-Voltage, Dual-Supply, 8-Bit, Signal Translator Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Conditions Min. Max. Unit VCCA Supply Voltage -0.5 4.6 V VCCB -0.5 4.6 VI DC Input Voltage I/O Port A -0.5 4.6 V I/O Port B -0.5 4.6 Control Inputs (T/R, OE) -0.5 4.6 VO Output Voltage (1) Output 3-State -0.5 4.6 V Output Active (An) -0.5 to VCCA 0.5 Output Active (Bn) -0.5 to VCCB 0.5 IIK DC Input Diode Current V I < 0V -50 mA IOK DC Output Diode Current VO < 0V -50 mA VO > VCC 50 IOH/IOL DC Output Source/Sink Current ±50 mA ICC DC V CC or Ground Current per Supply Pin ±100 mA TSTG Storage Temperature Range -65 +150 °C ESD Electrostatic Discharge Capability Human Body Model, JESD22-A114, Mil Std 883e 3015.7 kV I/O to GND 8 Charged Device Model, JESD22-C101,STM 5.3 1 Machine Model, JESD22-A115,STM 5.2 200 V Note: 1. I/O absolute maximum ratings must be observed. Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ens ure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Conditions Min. Max. Unit VCC Power Supply Operating V CCA or VCCB 1.1 3.6 V VI Input Voltage Port A 0 3.6 V Port B 0 3.6 Control Inputs (T/R, OE) 0 V CCA IOH/IOL Output Current V CC0 3.0V to 3.6V ±24 mA 2.3V to 2.7V ±18 1.65V to 1.95V ±6 1.40V to 1.65V ±2 1.1V to 1.4V ±0.5 TA Operating Temperature, Free Air -40 +85 °C ΔV/Δt Minimum Input Edge Rate V CCA/B =1.1V to 3.6V 10 ns/V Note: 2. All unused inputs must be held at V CCI or GND.
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com FXL4245 • Rev. 1.0.3 4 FXL4245 — Low-Voltage, Dual-Supply, 8-Bit, Signal Translator
Electrical Characteristics
Symbol Parameter Conditions V CCI (V) V CCO (V) Min. Max. Units VIH HIGH Level Input(3) Data Inputs An, Bn 2.70 to 3.60 1.1 to 3.6 2.0 V 2.30 to 2.70 1.6 1.65 to 2.30 0.65 x V CCI 1.40 to 1.65 0.65 x V CCI 1.10 to 1.40 0.9 x V CCI Control Pins OE, T/R (Referenced to V CCA) 2.70 to 3.6 1.1 to 3.6 2.0 2.30 to 2.70 1.6 1.65 to 2.30 0.65 x V CCA 1.40 to 1.65 0.65 x V CCA 1.10 to 1.40 0.9 x V CCA VIL LOW Level Input (3) Data Inputs An, Bn 2.70 to 3.60 1.1 to 3.6 0.8 V 2.30 to 2.70 0.7 1.65 to 2.30 0.35 x V CCI 1.40 to 1.65 0.35 x V CCI 1.10 to 1.40 0.10 x V CCI Control Pins /OE, T/R (Referenced to V CCA) 2.70 to 3.60 1.1 to 3.6 0.8 2.30 to 2.70 0.7 1.65 to 2.30 0.35 x V CCI 1.40 to 1.65 0.35 x V CCI 1.10 to 1.40 0.10 x V CCI VOH HIGH Level Output (4) V IOH = -12mA 2.7 2.7 2.2 IOH = -18mA 3.0 3.0 2.4 IOH = -24mA 3.0 3.0 2.2 IOH = -6mA 2.3 2.3 2.0 IOH = -12mA 2.3 2.3 1.8 IOH = -18mA 2.3 2.3 1.7 IOH = -6mA 1.65 1.65 1.25 IOH = -2mA 1.4 1.4 1.05 IOH = -0.5mA 1.1 1.1 0.75 x V CC0 VOL LOW Level Output (4) V IOL = 12mA 2.7 2.7 0.4 IOL = 18mA 3.0 3.0 0.4 IOL = 24mA 3.0 3.0 0.55 IOL = 12mA 2.3 2.3 0.4 IOL = 18mA 2.3 2.3 0.6 IOL = 6mA 1.65 1.65 0.3 IOL = 2mA 1.4 1.4 0.35 IOL = 0.5mA 1.1 1.1 0.3 x V CC0 Continued on the following page…
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com FXL4245 • Rev. 1.0.3 5 FXL4245 — Low-Voltage, Dual-Supply, 8-Bit, Signal Translator Symbol Parameter Conditions V CCI (V) V CCO (V) Min. Max. Units IL Input Leakage Current, Control Pins VI=VCCA or GND 1.1 to 3.6 3.6 ±1.0 µA IOFF Power Off Leakage Current An, VI or VO=0V to 3.6V 0 3.6 ±10 µA Bn, VI or VO=0V to 3.6V 3.6 0 ±10 IOZ 3-State Output Leakage (0 ≤ VO ≤ 3.6V, VI=VIH or VIL) An, Bn, /OE=VIH 3.6 3.6 ±10 µA Bn, /OE= Don’t Care(5) 0 3.6 ±10 An, /OE= Don’t Care(5) 3.6 0 ±10 ICCA/B Quiescent Supply Current(6) VI=VCCI or GND; IO=0 1.1 to 3.6 1.1 to 3.6 20 µA ICCZ 1.1 to 3.6 1.1 to 3.6 20 ICCA V I=VCCA or GND; IO=0 0 1.1 to 3.6 -10 1.1 to 3.6 0 10 ICCB V I=VCCB or GND; IO=0 1.1 to 3.6 0 -10 0 1.1 to 3.6 10 ΔICCA/B Increase in ICC per Input; Other Inputs at V CC or GND VIH=3.0 3.6 3.6 500 µA Notes: 3. V CCI = the VCC associated with the data input under test. 4. V CCO = the VCC associated with the output under test. 5. Don’t care = any valid logic level. 6. Reflects current per supply, V CCA or VCCB.
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com FXL4245 • Rev. 1.0.3 6 FXL4245 — Low-Voltage, Dual-Supply, 8-Bit, Signal Translator VCCA=3.0V to 3.6V Symbol Parameter TA= -40 to +85°C Units VCCB=3.0V to 3.6V VCCB=2.3V to 2.7V VCCB=1.65V to 1.95V VCCB=1.4V to 1.6V VCCB=1.1V to 1.3V tPLH, tPHL Propagation ns Propagation tPZH, tPZL Output Enable ns Output Enable tPHZ, tPLZ Output Disable ns Output Disable VCCA=2.3V to 2.7V Symbol Parameter TA= -40 to +85°C Units VCCB=3.0V to 3.6V VCCB=2.3V to 2.7V VCCB=1.65V to 1.95V VCCB=1.4V to 1.6V VCCB=1.1V to 1.3V tPLH, tPHL Propagation ns Propagation tPZH, tPZL Output Enable ns Output Enable tPHZ, tPLZ Output Disable ns Output Disable VCCA=1.65V to 1.95V Symbol Parameter TA= -40 to +85°C Units VCCB=3.0V to 3.6V VCCB=2.3V to 2.7V VCCB=1.65V to 1.95V VCCB=1.4V to 1.6V VCCB=1.1V to 1.3V tPLH, tPHL Propagation ns Propagation tPZH, tPZL Output Enable ns Output Enable tPHZ, tPLZ Output Disable ns Output Disable
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com FXL4245 • Rev. 1.0.3 7 FXL4245 — Low-Voltage, Dual-Supply, 8-Bit, Signal Translator VCCA=1.4V to 1.6V Symbol Parameter TA= -40 to +85°C Units VCCB=3.0V to 3.6V VCCB=2.3V to 2.7V VCCB=1.65V to 1.95V VCCB=1.4V to 1.6V VCCB=1.1V to 1.3V tPLH, tPHL Propagation ns Propagation tPZH, tPZL Output Enable ns Output Enable tPHZ, tPLZ Output Disable ns Output Disable VCCA=1.1V to 1.3V Symbol Parameter TA= -40 to +85°C Units VCCB=3.0V to 3.6V VCCB=2.3V to 2.7V VCCB=1.65V to 1.95V VCCB=1.4V to 1.6V VCCB=1.1V to 1.3V tPLH, tPHL Propagation ns Propagation tPZH, tPZL Output Enable ns Output Enable tPHZ, tPLZ Output Disable ns Output Disable Capacitance Symbol Parameter Conditions TA=+25°C Units Typical CIN Input Capacitance V CCA=VCCB=0V, VI=0V or VCCA/B 4 pF CI/O Input/Output Capacitance V CCA=VCCB=3.3V, VI=0V or VCCA/B 5 pF CPD Power Dissipation Capacitance V CCA=VCCB=3.3V, VI=0V or VCC, f=10MHz 20 pF
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com FXL4245 • Rev. 1.0.3 9 FXL4245 — Low-Voltage, Dual-Supply, 8-Bit, Signal Translator Functional Description Power-Up/Power-Down Sequencing FXL translators offer an advantage in that either V CC may be powered up first. This benefit derives from the chip design. When either V CC is at 0V, outputs are in a High-impedance state. The control inputs (T/R and OE) are designed to track the V CCA supply. A pull-up resistor tying OE to V CCA should be used to ensure that bus contention, excessive currents, or oscillations do not occur during power-up/power-down. The size of the pull-up resistor is based upon the current-sinking capability of the OE driver. The recommended power-up sequence is: 1. Apply power to either V CC. 2. Apply power to the T/R input (logic HIGH for A-to-B operation; logic LOW for B-to-A operation) and to the respective data inputs (A port or B port). This may occur at the same time as step 1. 3. Apply power to the other V CC. 4. Drive the OE input LOW to enable the device. The recommended power-down sequence is: 1. Drive OE input HIGH to disable the device. 2. Remove power from either V CC. 3. Remove power from the other V CC.
Figure 6. 24-Pin Molded Leadless Packag e (MLP), JEDEC MO-220, 3.5 x 4.5mm the warranty therein, which covers Fairchild products.
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com FXL4245 • Rev. 1.0.3 11 FXL4245 — Low-Voltage, Dual-Supply, 8-Bit, Signal Translator