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| 74LVXC3245 OCTAL DUAL SUPPLY BUS TRANSCEIVER s s s s s s s HIGH SPEED: tPD = 8ns (MAX.) at TA=25C VCCA = 3.3V, VCCB = 5.0V LOW POWER DISSIPATION: ICCA = ICCB = 5A(MAX.) at TA=25C LOW NOISE: VOLP =0.3V (TYP.) at VCCA=3.3V SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: VCCA(OPR) = 2.7V to 3.6V (1.2V Data Retention) VCCB(OPR) = 2.7V to 5.5V (1.2V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES C3245 IMPROVED LATCH-UP IMMUNITY SOP TSSOP Table 1: Order Codes PACKAGE SOP TSSOP T&R 74LVXC3245MTR 74LVXC3245TTR DESCRIPTION The 74LVXC3245 is a dual supply 8 bit configurable low voltage CMOS OCTAL BUS TRANSCEIVER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. Designed for use as an interface between a 3.3V bus and a 3.3V to 5V bus in a mixed 3.3V/5V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation. Figure 1: Pin Connection And IEC Logic Symbols This IC is intended for two-way asynchronous communication between data buses and the direction of data transmission is determined by DIR input. The enable input G can be used to disable the device so that the buses are effectively isolated. The A-port interfaces with the 3V bus, the B-port with the 5V bus. All inputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. August 2004 Rev. 4 1/14 74LVXC3245 Figure 2: Input And Output Equivalent Circuit Table 2: Pin Description PIN N 2 3, 4, 5, 6, 7, 8, 9, 10 21, 20, 19, 18, 17, 16, 15, 14 22 11, 12, 13 23 1 24 SYMBOL DIR A1 to A8 B1 to B8 NAME AND FUNCTION Directional Control Data Inputs/Outputs Data Inputs/Outputs G GND NC VCCA VCCB Output Enable Input Ground (0V) Not Connected Positive Supply Voltage Positive Supply Voltage Table 3: Truth Table INPUTS G L L H X : Don't Care Z : High Impedance FUNCTION OUTPUT DIR L H X A BUS OUTPUT INPUT Z B BUS INPUT OUTPUT Z A=B B=A Z Table 4: Absolute Maximum Ratings Symbol VCCA VCCB VI VI/OA VI/OB IIK IOK IOA IOB ICCA ICCB Pd Tstg TL Supply Voltage Supply Voltage DC Input Voltage DC I/O Voltage DC I/O Voltage DC Input Diode Current DC Output Diode Current DC Output Current DC Output Current DC VCC or Ground Current DC VCC or Ground Current Power Dissipation Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCCA + 0.5 -0.5 to VCCA + 0.5 -0.5 to VCCB + 0.5 20 50 50 50 200 100 180 -65 to +150 300 Unit V V V V V mA mA mA mA mA mA mW C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied 2/14 74LVXC3245 Table 5: Recommended Operating Conditions Symbol VCCA VCCB VI VI/OA VI/OB Top dt/dv Supply Voltage (note 1) Supply Voltage (note 1) Input Voltage I/O Voltage I/O Voltage Operating Temperature Input Rise and Fall Time (note 2) Parameter Value 2.7 to 3.6 2.7 to 5.5 0 to VCCA 0 to VCCA 0 to VCCB -55 to 125 0 to 10 Unit V V V V V C ns/V 1) VIN from 30% to 70% of VCC 2) VCCA = 2.7 to 3.6V; VCCB = 2.7 to 5.5V; Table 6: DC Specifications For VCCA Test Condition Symbol Parameter VCCA VCCB (V) (V) 2.7 3.0 3.6 2.7 3.0 3.6 3.0 3.0 3.0 2.7 2.7 VOLA Low Level Output Voltage 3.0 3.0 2.7 2.7 IIA IOZA Input Leakage Current High Impedance Output Leakage Current Quiescent Supply Current Quiescent VCCA Supply Current as B Port Floats Maximum Quiescent Supply Current / Input (An, DIR, G) 3.6 3.6 3.0 3.6 5.5 3.0 3.6 5.5 3.0 3.0 3.0 3.0 4.5 3.0 3.0 3.0 4.5 5.5 5.5 IO=-100 A IO=-12 mA IO=-24 mA IO=-12 mA IO=-24 mA IO=100 A IO=24 mA IO=12 mA IO=24 mA VI = VCC or GND VIA = VIHA or VILA VIB = VIHB or VILB VI/OA = VCCA or GND VIA = VCCA or GND VIB = VCCB or GND TA = 25 C Min. 2.0 2.0 2.0 0.8 0.8 0.8 2.9 2.56 2.35 2.3 2.1 2.99 2.85 2.65 2.5 2.3 0.0 0.21 0.11 0.22 0.1 0.36 0.36 0.42 0.1 0.5 2.9 2.46 2.25 2.2 2.0 0.1 0.44 0.44 0.5 1 5 Typ. Max. Value -40 to 85 C -55 to 125C Unit Min. 2.0 2.0 2.0 0.8 0.8 0.8 2.9 2.46 2.25 2.2 2.0 0.1 0.44 0.44 0.5 1 5 A A V V Max. Min. 2.0 2.0 2.0 0.8 0.8 0.8 Max. V VIHA High Level Input Voltage Low Level Input Voltage High Level Output Voltage VILA V VOHA ICCtA ICCtAF 3.6 3.6 5.5 5 5 50 50 50 50 A A Open VIA = VCCA or GND G= DIR = VCCA VIB = Open 5.5 VIA = VCCA - 0.6V VIB = VCCB or GND ICCtA 3.6 0.35 0.5 0.5 mA 3/14 74LVXC3245 Table 7: DC Specifications For VCCB Test Condition Symbol Parameter VCCA VCCB (V) (V) 2.7 3.0 3.6 2.7 3.0 3.6 3.0 3.0 3.0 3.0 VOLB Low Level Output Voltage 3.0 3.0 3.0 IIB IOZB Input Leakage Current High Impedance Output Leakage Current Quiescent Supply Current 3.6 3.6 3.0 3.6 5.5 3.0 3.6 5.5 3.0 3.0 3.0 4.5 3.0 3.0 4.5 5.5 5.5 IO=-100 A IO=-12 mA IO=-24 mA IO=-24 mA IO=100 A IO=24 mA IO=24 mA VI = VCCA or GND VIA = VIHA or VILA VI/OB = VCCB or GND VIA = VCCA or GND VIB = VCCB or GND VIA = VCCA or GND VIB = VCCB - 2.1V TA = 25 C Min. 2.0 2.0 3.85 0.8 0.8 1.65 2.9 2.56 2.35 3.86 3.0 2.85 2.65 4.25 0.00 0.21 0.18 0.1 0.36 0.36 0.1 0.5 2.9 2.46 2.25 3.76 0.1 0.44 0.44 1 5 Typ. Max. Value -40 to 85 C -55 to 125C Unit Min. 2.0 2.0 3.85 0.8 0.8 1.65 2.9 2.46 2.25 3.76 0.1 0.44 0.44 1 5 A A V V Max. Min. 2.0 2.0 3.85 0.8 0.8 1.65 Max. V VIHB High Level Input Voltage Low Level Input Voltage High Level Output Voltage VILB V VOHB ICCtB 3.6 5.5 5 50 50 A ICCtB Maximum Quiescent Supply Current / Input 3.6 5.5 1.35 1.5 1.5 mA 4/14 74LVXC3245 Table 8: Dynamic Switching Characteristics Test Condition Symbol Parameter VCCA VCCB (V) (V) 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 0.8 0.8 2 -0.8 -1.2 TA = 25 C Min. Typ. 1.0 -0.6 0.8 -0.5 2 1.2 V V V V V Max. 1.5 V Value -40 to 85 C -55 to 125C Unit Min. Max. Min. Max. VOLPA VOLPB VIHDA VILDA VIHDB VILDB Dynamic Low Level Quiet Output (note 1, 2) Dynamic Low Level Quiet Output (note 1, 2) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) 1) Worst case package 2) Max number of output defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND 3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3V to threshold (VILD). 0V to threshold (VIHD) f = 1MHz 5/14 74LVXC3245 Table 9: AC Electrical Characteristics (CL = 50pF, Input tr = tf = 3ns) Test Condition Symbol Parameter VCCB (V) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) TA = 25C Min. 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Typ. 5.5 4.8 5.2 3.9 6.0 4.7 6.1 4.8 6.3 4.0 4.5 3.8 4.4 3.8 5.1 4.3 6.4 5.9 5.8 5.4 5.2 4.6 3.4 3.1 0.5 0.5 Max. 8.5 8.0 8.0 6.5 9.0 8.0 9.5 8.5 9.5 8.0 8.0 7.5 7.0 6.5 7.5 7.5 10.0 9.5 9.0 9.0 9.5 9.5 6.5 6.5 1.0 1.0 Value (3) -40 to 85C Min. 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max. 9.0 8.5 8.5 7.0 9.5 8.5 10.0 9.0 10.0 8.5 8.5 8.0 7.5 7.0 8.0 8.0 10.5 10.0 9.5 9.5 10.0 10.0 7.0 7.0 1.5 1.5 -55 to 125C Min. 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max. 9.5 9. 9.0 7.5 9.5 8.5 10.5 9.5 10.5 8.5 8.5 8.5 7.5 7.5 8.5 8.5 10.5 10.5 9.5 9.5 10.5 10.5 7.5 7.5 1.5 1.5 Unit tPLH tPHL tPZL tPZH tPLZ tPHZ tPLH tPHL tPZL tPZH tPLZ tPHZ tOSLH tOSHL Propagation Delay Time (An to Bn) Propagation Delay Time (An to Bn) Output Enable Time (G to Bn) Output Enable Time (G to Bn) Output Disable Time (G to Bn) Output Disable Time (G to Bn) Propagation Delay Time (Bn to An) Propagation Delay Time (Bn to An) Output Enable Time (G to An) Output Enable Time (G to An) Output Disable Time (G to An) Output Disable Time (G to An) Output To Output Skew Time (note1, 2) ns ns ns ns ns ns ns 1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switching in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn| 2) Parameter guaranteed by design 3) Typical values referred at VCCA = 3.3V, VCCB = 5.0V or VCCA = 3.3V, VCCB = 3.3V (*) Voltage Range is 3.0V 0.3 (**) Voltage Range is 5.0V 0.5 6/14 74LVXC3245 Table 10: Capacitive Characteristics Test Condition Symbol Parameter VCCA VCCB (V) (V) open open 3.3 3.3 5.0 5.0 TA = 25 C Min. Typ. 4.5 10 55 Max. 10 Value -40 to 85 C -55 to 125C Unit Min. Max. 10 Min. Max. 10 V V V CINA CI/O CPD CPD Input Capacitance Input/Output Capacitance Dynamic Low Level Quiet Output (note 1) A to B Dynamic Low Level Quiet Output (note 1) B to A 3.3 5.0 40 V 1) CPD is defined as the value of the IC's internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/8 (per circuit) Figure 3: Test Circuit TEST tPLH, tPHL tPZLH, tPLZ tPZH, tPHZ CL = 50pF or equivalent (includes jig and probe capacitance) RL = R1 = 500 or equivalent RT = ZOUT of pulse generator (typically 50) SWITCH Open 2VCC Open 7/14 74LVXC3245 Figure 4: Waveform - Propagation Delays (f=1MHz; 50% duty cycle) Figure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle) 8/14 74LVXC3245 SO-24 MECHANICAL DATA DIM. A A1 B C D E e H h L k ddd 10.00 0.25 0.4 0 mm. MIN. 2.35 0.1 0.33 0.23 15.20 7.4 1.27 10.65 0.75 1.27 8 0.100 0.394 0.010 0.016 0 TYP MAX. 2.65 0.30 0.51 0.32 15.60 7.6 MIN. 0.093 0.004 0.013 0.009 0.598 0.291 0.050 0.419 0.030 0.050 8 0.004 inch TYP. MAX. 0.104 0.012 0.020 0.013 0.614 0.299 0070769C 9/14 74LVXC3245 TSSOP24 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E e H K L 6.25 0 0.50 0.19 0.09 7.7 4.3 0.65 BSC 6.5 8 0.70 0.246 0 0.020 0.05 0.9 0.30 0.20 7.9 4.5 0.0075 0.0035 0.303 0.169 0.0256 BSC 0.256 8 0.028 TYP MAX. 1.1 0.15 0.002 0.035 0.0118 0.0079 0.311 0.177 MIN. TYP. MAX. 0.043 0.006 inch A A2 A1 b e K c L H D E PIN 1 IDENTIFICATION 1 7047476B 10/14 74LVXC3245 Tape & Reel SO-24 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 10.8 15.7 2.9 3.9 11.9 12.8 20.2 60 30.4 11.0 15.9 3.1 4.1 12.1 0.425 0.618 0.114 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 1.197 0.433 0.626 0.122 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 11/14 74LVXC3245 Tape & Reel TSSOP24 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.8 8.2 1.7 3.9 11.9 12.8 20.2 60 22.4 7 8.4 1.9 4.1 12.1 0.268 0.323 0.067 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.276 0.331 0.075 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 12/14 74LVXC3245 Table 11: Revision History Date 27-Aug-2004 Revision 4 Description of Changes Ordering Codes Revision - pag. 1. 13/14 74LVXC3245 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners (c) 2004 STMicroelectronics - All Rights Reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 14/14 |
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