74LVXC4245 OCTAL DUAL SUPPLY BUS TRANSCEIVER ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 6.5ns (MAX.) at VCCA = 5.0V, VCCB = 5.0V LOW POWER DISSIPATION: ICCA = ICCB = 5µA(MAX.) at TA=25°C LOW NOISE: VOLP =0.3V (TYP.) at VCCA=5.0V VCCB =3.3V SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCCA(OPR) = 4.5V to 5.5V (1.2V Data Retention) VCCB(OPR) = 2.7V to 5.5V (1.2V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES C4245 IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74LVXC4245 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 5V bus and a 3.3V to 5V bus in a mixed 5V/3.3V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation. SOP TSSOP ORDER CODES PACKAGE TUBE T&R SOP TSSOP 74LVXC4245M 74LVXC4245MTR 74LVXC4245TTR 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 5V bus, the B-port with the 3.3V to 5V bus. All inputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/11 74LVXC4245 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL 2 3, 4, 5, 6, 7, 8, 9, 10 21, 20, 19, 18, 17, 16, 15, 14 22 11, 12, 13 23 1 DIR A1 to A8 Directional Control Data Inputs/Outputs B1 to B8 Data Inputs/Outputs 24 NAME AND FUNCTION G GND NC VCCA Output Enable Input Ground (0V) Not Connected Positive Supply Voltage VCCB Positive Supply Voltage TRUTH TABLE INPUTS FUNCTION OUTPUT G DIR A BUS B BUS L L H L H X OUTPUT INPUT Z INPUT OUTPUT Z A=B B=A Z X : Don’t Care Z : High Impedance ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCCA Supply Voltage -0.5 to +7.0 V VCCB Supply Voltage -0.5 to +7.0 V VI DC Input Voltage -0.5 to VCCA + 0.5 V VI/OA DC I/O Voltage V VI/OB DC I/O Voltage -0.5 to VCCA + 0.5 -0.5 to VCCB + 0.5 V IIK DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 50 mA IOA DC Output Current ± 50 mA IOB DC Output Current ± 50 mA ICCA DC VCC or Ground Current ± 200 mA ICCB DC VCC or Ground Current ± 100 mA Pd Power Dissipation Tstg Storage Temperature TL Lead Temperature (10 sec) 180 mW -65 to +150 °C 300 °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied 2/11 74LVXC4245 RECOMMENDED OPERATING CONDITIONS Symbol Value Unit VCCA Supply Voltage (note 1) 4.5 to 5.5 V VCCB Supply Voltage (note 1) 2.7 to 5.5 V Input Voltage 0 to VCCA 0 to VCCA V VI Parameter VI/OA I/O Voltage VI/OB I/O Voltage Top dt/dv Operating Temperature V 0 to VCCB -40 to 85 °C 0 to 10 ns/V Input Rise and Fall Time (note 2) V 1) VIN from 30% to 70% of VCC 2) VCCA = 4.5 to 5.5V; VCCB = 2.7 to 3.6V; DC SPECIFICATIONS FOR VCCA Test Condition Symbol VIHA VILA VOHA VOLA IIA Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Value TA = 25 °C VCCA VCCB (V) (V) Min. 4.5 4.5 5.5 4.5 4.5 5.5 2.7 3.6 5.5 2.7 3.6 5.5 4.5 3.0 IO=-100 µA 4.4 4.5 3.0 IO=-24 mA 3.86 4.5 3.0 IO=100 µA 4.5 3.0 5.5 3.6 5.5 3.6 IOZA Input Leakage Current High Impedance Output Leakage Current ICCtA Quiescent Supply Current 5.5 ICCtAF Quiescent VCCA Supply Current as B Port Floats 5.5 ∆ICCtA Maximum Quiescent Supply Current / Input (An, DIR, G) 5.5 Typ. -40 to 85 °C -55 to 125°C Unit Max. 2.0 2.0 2.0 Min. Max. 2.0 2.0 2.0 0.8 0.8 0.8 4.5 Max. 2.0 2.0 2.0 0.8 0.8 0.8 V 0.8 0.8 0.8 4.4 4.4 3.76 3.76 V V 0.1 0.1 0.1 IO=24 mA 0.36 0.44 0.44 VI = VCC or GND ± 0.1 ±1 ±1 µA VIA = VIHA or VILA VIB = VIHB or VILB VI/OA = VCCA or GND 3.6 VIA = VCCA or GND VIB = VCCB or GND Open VIA = VCCA or GND G= DIR = VCCA VIB = Open ± 0.5 ±5 ±5 µA 5 50 50 µA 5 50 50 µA 1.35 1.5 1.5 mA 5.5 VIA = VCCA - 2.1V VIB = VCCB or GND 0 Min. V 3/11 74LVXC4245 DC SPECIFICATIONS FOR VCCB Test Condition Symbol VIHB VILB VOHB VOLB IIB Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Min. 2.7 3.6 5.5 2.7 3.6 5.5 Typ. -40 to 85 °C -55 to 125°C Unit Max. 2.0 2.0 3.85 Min. Max. 2.0 2.0 3.85 0.8 0.8 1.65 Min. Max. 2.0 2.0 3.85 0.8 0.8 1.65 V 0.8 0.8 1.65 4.5 3.0 IO=-100 µA 2.9 3.0 2.9 2.9 4.5 3.0 IO=-12 mA 2.56 2.85 2.46 2.46 4.5 3.0 IO=-24 mA 2.35 2.65 2.25 2.25 4.5 2.7 IO=-12 mA 2.3 2.5 2.2 2.2 4.5 2.7 IO=-24 mA 2.1 2.3 2.0 2.0 4.5 4.5 IO=-24 mA 3.86 4.25 3.76 3.76 V V 4.5 3.0 IO=100 µA 0.0 0.1 0.1 0.1 4.5 3.0 IO=24 mA 0.21 0.36 0.44 0.44 4.5 2.7 IO=12 mA 0.11 0.36 0.44 0.44 4.5 2.7 IO=24 mA 0.22 0.42 0.50 0.50 4.5 4.5 IO=24 mA 0.18 0.36 0.44 0.44 5.5 5.5 VI = VCCA or GND ± 0.1 ±1 ±1 µA 5.5 5.5 VIA = VIHA or VILA VI/Ob = VCCb or GND VIA = VCCA or GND VIB = VCCB or GND VIA = VCCA or GND VIB = VCCB - 0.6V ± 0.5 ±5 ±5 µA 5 50 50 µA 0.35 0.5 0.5 mA IOZB Input Leakage Current High Impedance Output Leakage Current ICCtB Quiescent Supply Current 5.5 5.5 ∆ICCtB Maximum Quiescent Supply Current / Input 5.5 3.6 4/11 TA = 25 °C VCCA VCCB (V) (V) 4.5 4.5 4.5 4.5 4.5 4.5 Value V 74LVXC4245 DINAMIC SWITCHING CHARACTERISTICS Test Condition Symbol VOLPA VOLPB VIHDA VILDA VIHDB VILDB Parameter 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) VCCA VCCB (V) (V) 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 Value TA = 25 °C Min. -1.2 Typ. Max. 1.0 1.5 Max. Min. Max. 1.2 V -0.5 2 0.8 V V 2 0.8 Min. V -0.6 0.8 -0.8 -40 to 85 °C -55 to 125°C Unit V V 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 5/11 74LVXC4245 AC ELECTRICAL CHARACTERISTICS (C L = 50pF, Input tr = tf = 3ns) Value (3) Test Condition Symbol Parameter tPLH Propagation Delay Time (An to Bn) 2.7 to 3.6 Propagation Delay Time (An to Bn) 5.0(*) 2.7 to 3.6 tPHL tPZL tPZH tPLZ tPHZ tPLH tPHL tPZL tPZH tPLZ tPHZ tOSLH tOSHL VCCB (V) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. 1.0 5.5 7.5 1.0 8.0 1.0 8.5 1.0 4.9 6.5 1.0 7.0 1.0 7.5 1.0 5.0 7.0 1.0 7.5 1.0 7.5 1.0 4.0 5.5 1.0 6.0 1.0 6.5 Output Enable Time (G to Bn) 5.0(*) 2.7 to 3.6 1.0 6.7 9.0 1.0 10.0 1.0 10.5 1.0 5.6 7.5 1.0 8.0 1.0 8.5 Output Enable Time (G to Bn) 5.0(*) 2.7 to 3.6 1.0 6.9 9.5 1.0 10.0 1.0 10.5 1.0 5.7 7.5 1.0 8.0 1.0 8.5 Output Disable Time (G to Bn) 5.0(*) 2.7 to 3.6 1.0 6.0 9.0 1.0 9.5 1.0 9.5 1.0 4.8 7.0 1.0 7.5 1.0 7.5 Output Disable Time (G to Bn) 5.0(*) 2.7 to 3.6 1.0 4.2 6.5 1.0 7.0 1.0 7.5 1.0 3.8 5.5 1.0 6.0 1.0 6.5 Propagation Delay Time (Bn to An) 5.0(*) 2.7 to 3.6 1.0 5.6 7.5 1.0 8.0 1.0 8.5 1.0 4.7 6.5 1.0 7.0 1.0 7.5 Propagation Delay Time (Bn to An) 5.0(*) 2.7 to 3.6 1.0 4.3 6.0 1.0 6.5 1.0 7.0 1.0 3.9 5.0 1.0 5.5 1.0 5.5 Output Enable Time (G to An) 5.0(*) 2.7 to 3.6 1.0 8.0 10.0 1.0 11.0 1.0 11.5 1.0 7.4 9.0 1.0 10.0 1.0 10.5 Output Enable Time (G to An) 5.0(*) 2.7 to 3.6 1.0 6.3 8.0 1.0 8.5 1.0 8.5 1.0 6.1 7.5 1.0 8.5 1.0 8.5 Output Disable Time (G to An) 5.0(*) 2.7 to 3.6 1.0 3.4 5.5 1.0 6.0 1.0 6.5 1.0 3.4 5.5 1.0 6.0 1.0 6.5 Output Disable Time (G to An) 5.0(*) 2.7 to 3.6 1.0 2.9 5.0 1.0 5.5 1.0 6.0 5.0(*) 2.7 to 3.6 1.0 1.0 5.0 1.0 Output To Output Skew Time (note1, 2) 5.0(*) 2.9 4.5 0.5 1.0 1.5 1.5 0.5 1.0 1.5 1.5 Unit ns ns ns ns ns ns 5.5 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 - t PLHn|, tOSHL = | tPHLm - tPHLn| 2) Parameter guaranteed by design 3) Typical values referred at VCCA = 5.0V, VCCB = 5.0V or VCCA = 5.0V, VCCB = 3.3V (*) Voltage Range is 5.0V ± 0.5 6/11 74LVXC4245 CAPACITIVE CHARACTERISTICS Test Condition Symbol CINA CI/O CPD CPD Parameter 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 VCCA VCCB (V) (V) open open Value TA = 25 °C Min. -40 to 85 °C -55 to 125°C Unit Typ. Max. 4.5 10 Min. Max. Min. 10 Max. 10 V 5.0 3.3 10 V 5.0 3.3 55 V 5.0 3.3 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) TEST CIRCUIT TEST SWITCH tPLH, tPHL Open tPZLH, tPLZ 2VCC tPZH, tPHZ Open CL = 50pF or equivalent (includes jig and probe capacitance) RL = R1 = 500Ω or equivalent RT = ZOUT of pulse generator (typically 50Ω) 7/11 74LVXC4245 WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 8/11 74LVXC4245 SO-24 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 2.65 a1 0.1 0.104 0.2 a2 0.004 0.008 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.012 C 0.5 0.020 c1 45° (typ.) D 15.20 15.60 0.598 0.614 E 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 13.97 0.550 F 7.40 7.60 0.291 0.300 L 0.50 1.27 0.020 0.050 S 8° (max.) L s e3 b1 e a1 b A a2 C c1 E D 13 1 12 F 24 PO13T 9/11 74LVXC4245 TSSOP24 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 1.1 A1 0.05 0.15 A2 0.043 0.002 0.006 0.9 0.035 b 0.19 0.30 0.0075 0.0118 c 0.09 0.20 0.0035 0.0079 D 7.7 7.9 0.303 0.311 E 6.25 6.5 0.246 0.256 E1 4.3 4.5 0.169 0.177 e 0.65 BSC 0.0256 BSC K 0° 8° 0° 8° L 0.50 0.70 0.020 0.028 A A2 A1 b K e L E c D E1 PIN 1 IDENTIFICATION 1 7047476A 10/11 74LVCXC4245 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 © 2001 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom © http://www.st.com 11/11