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| 74LVX157 LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTS s s s s s s s s s s s HIGH SPEED : tPD = 5.1 ns (TYP.) at VCC = 3.3V 5V TOLERANT INPUTS INPUT VOLTAGE LEVEL : VIL=0.8V, VIH=2V at VCC=3V LOW POWER DISSIPATION: ICC = 2 A (MAX.) at TA=25C LOW NOISE: VOLP = 0.3V (TYP.) at VCC = 3.3V SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 2V to 3.6V (1.2V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 157 IMPROVED LATCH-UP IMMUNITY POWER DOWN PROTECTION ON INPUTS SOP TSSOP ORDER CODES PACKAGE SOP TSSOP TUBE 74LVX157M T&R 74LVX157MTR 74LVX157TTR DESCRIPTION The 74LVX157 is a low voltage CMOS QUAD 2 CHANNEL MULTIPLEXER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for low power, battery operated and low noise 3.3V applications. It consists of four 2-input digital multiplexers with common select and strobe inputs. When STROBE input is held high, selection of data is inhibited and all the outputs become low. The SELECT decoding determines whether the A or B inputs get routed to their corresponding Y outputs. Power down protection is provided on all inputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V system. It combines high speed performance with the true CMOS low power consumption. All inputs and outputs 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 1/9 74LVX157 INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1 2, 5, 11, 14 3, 6, 10, 13 4, 7, 9, 12 15 8 16 SYMBOL SELECT 1A to 4A 1B to 4B 1Y to 4Y STROBE GND VCC NAME AND FUNCTION Common Data Select Inputs Data Inputs From Source A Data Inputs From Source B Multiplexer Outputs Strobe Input Ground (0V) Positive Supply Voltage TRUTH TABLE INPUTS STROBE H L L L L X : Don't Care OUTPUT A X L H X X B X X X L H Y L L H L H SELECT X L L H H ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCC + 0.5 - 20 20 25 50 -65 to +150 300 Unit V V V mA mA mA mA C C ICC or IGND DC VCC or Ground Current Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. RECOMMENDED OPERATING CONDITIONS Symbol VCC VI VO Top dt/dv Supply Voltage (note 1) Input Voltage Output Voltage Operating Temperature Input Rise and Fall Time (note 2) (VCC = 3.3V) Parameter Value 2 to 3.6 0 to 5.5 0 to VCC -55 to 125 0 to 100 Unit V V V C ns/V 1) Truth Table guaranteed: 1.2V to 3.6V 2) VIN from 0.8V to 2.0V 2/9 74LVX157 DC SPECIFICATIONS Test Condition Symbol Parameter VCC (V) 2.0 3.0 3.6 2.0 3.0 3.6 2.0 3.0 3.0 VOL Low Level Output Voltage 2.0 3.0 3.0 II ICC Input Leakage Current Quiescent Supply Current 3.6 3.6 IO=-50 A IO=-50 A IO=-4 mA IO=50 A IO=50 A IO=4 mA VI = 5V or GND VI = VCC or GND TA = 25C Min. 1.5 2.0 2.4 0.5 0.8 0.8 1.9 2.9 2.58 0.0 0.0 0.1 0.1 0.36 0.1 2 2.0 3.0 1.9 2.9 2.48 0.1 0.1 0.44 1 20 Typ. Max. Value -40 to 85C Min. 1.5 2.0 2.4 0.5 0.8 0.8 1.9 2.9 2.4 0.1 0.1 0.55 1 20 A A V V Max. -55 to 125C Min. 1.5 2.0 2.4 0.5 0.8 0.8 Max. V Unit VIH High Level Input Voltage Low Level Input Voltage High Level Output Voltage VIL V VOH DYNAMIC SWITCHING CHARACTERISTICS Test Condition Symbol Parameter VCC (V) 3.3 3.3 CL = 50 pF 3.3 0.8 TA = 25C Min. Typ. 0.3 -0.5 2 V -0.3 Max. 0.5 Value -40 to 85C Min. Max. -55 to 125C Min. Max. Unit VOLP VOLV VIHD VILD Dynamic Low Voltage Quiet Output (note 1, 2) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) 1) Worst case package. 2) Max number of outputs 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: 3.3V to threshold (VILD), 0V to threshold (VIHD), f=1MHz. 3/9 74LVX157 AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3ns) Test Condition Symbol Parameter VCC (V) 2.7 2.7 3.3(*) 3.3(*) 2.7 2.7 3.3(*) 3.3(*) 2.7 2.7 3.3(*) 3.3(*) 2.7 3.3(*) CL (pF) 15 50 15 50 15 50 15 50 15 50 15 50 50 50 TA = 25C Min. Typ. 6.6 9.1 5.1 7.6 8.9 11.4 7.0 9.5 9.1 11.6 7.2 9.7 0.5 0.5 Max. 12.5 16.0 7.9 11.4 16.9 20.4 11.0 14.5 17.6 21.1 11.5 15.0 1.0 1.0 Value -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 Max. 15.5 19.0 9.5 13.0 20.5 24.0 13.0 16.5 20.5 20.4 13.5 17.0 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 Max. 16.5 20.0 11.0 14.0 21.5 26.0 14.0 17.5 21.5 21.4 14.5 18.0 1.5 1.5 ns ns ns ns Unit tPLH tPHL Propagation Delay Time (A, B - Y) tPLH tPHL Propagation Delay Time (SELECT - Y) tPLH tPHL Propagation Delay Time (STROBE - Y) tOSLH tOSHL Output To Output Skew Time (note1, 2) 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 2) Parameter guaranteed by design (*) Voltage range is 3.3V 0.3V CAPACITIVE CHARACTERISTICS Test Condition Symbol Parameter VCC (V) 3.3 3.3 fIN = 10MHz TA = 25C Min. Typ. 4 20 Max. 10 Value -40 to 85C Min. Max. 10 -55 to 125C Min. Max. pF pF Unit CIN CPD Input Capacitance Power Dissipation Capacitance (note 1) 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 operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x f IN + ICC/n (per circuit) 4/9 74LVX157 TEST CIRCUIT CL =15/50pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50) WAVEFORM 1 : PROPAGATION DELAYS FOR INVERTING CONDITIONS (f=1MHz; 50% duty cycle) 5/9 74LVX157 WAVEFORM 2 : PROPAGATION DELAYS FOR NON-INVERTING CONDITIONS (f=1MHz; 50% duty cycle) 6/9 74LVX157 SO-16 MECHANICAL DATA DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8 (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45 (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010 PO13H 7/9 74LVX157 TSSOP16 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8 0.75 0 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0089 0.201 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 8/9 74LVX157 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. (c) The ST logo is a registered trademark of STMicroelectronics (c) 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 (c) http://www.st.com 9/9 |
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