INTEGRATED CIRCUITS 74ALS157/74ALS158 Data selector/multiplexer Product specification IC05 Data Handbook 1991 Feb 08 Philips Semiconductors Product specification Data selector/multiplexer 74ALS157/74ALS158 74ALS157 Quad 2-input data selector/multiplexer, non-inverting 74ALS158 Quad 2-input data selector/multiplexer, inverting DESCRIPTION The 74ALS157 is a quad 2-input multiplexer which selects 4 bits of data from one of two sources under the control of a common select input (S). The enable input (E) is active when Low. When E is High, all of the outputs (Yn) are forced Low regardless of all other input conditions. TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74ALS157 6.0ns 6mA 74ALS158 6.0ns 6mA TYPE Moving data from two registers to a common output bus is a typical use of the 74ALS157. The state of the select input determines the particular register from which data comes. ORDERING INFORMATION ORDER CODE The device is the logic implementation of 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the select input. The 74ALS158 is similar but has inverting outputs (Yn). DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C DRAWING NUMBER 16-pin plastic DIP 74ALS157N, 74ALS158N SOT38-4 16-pin plastic SO 74ALS157D, 74ALS158D SOT109-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS DESCRIPTION 74ALS (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW Ina, Inb, Inc, Ind Data inputs 1.0/1.0 20µA/0.1mA S Select input 1.0/1.0 20µA/0.1mA E Enable input 1.0/1.0 20µA/0.1mA Ya – Yd, Ya – Yd Data outputs 20/240 0.4mA/24mA NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state. PIN CONFIGURATION – 74ALS157 PIN CONFIGURATION – 74ALS158 S 1 16 VCC S 1 16 VCC I0a 2 15 E I0a 2 15 E I1a 3 14 I0d I1a 3 14 I0d Ya 4 13 I1d Ya 4 13 I1d I0b 5 12 Yd I0b 5 12 Yd I1b 6 11 I0c I1b 6 11 I0c Yb 7 10 I1c Yb 7 10 I1c GND 8 9 Yc GND 8 9 Yc SC00051 SC00052 LOGIC SYMBOL – 74ALS157 2 3 5 I0a I1a I0b LOGIC SYMBOL – 74ALS158 6 11 10 14 I1b I0c I1c I0d I1d 2 13 1 S 1 S 15 E 15 E VCC = Pin 16 GND = Pin 8 1991 Feb 08 Ya Yb Yc Yd 4 7 9 12 VCC = Pin 16 GND = Pin 8 SC00053 2 3 5 6 11 10 14 13 I0a I1a I0b I1b I0c I1c I0d I1d Ya Yb Yc Yd 4 7 9 12 SC00054 853–1129 01670 Philips Semiconductors Product specification Data selector/multiplexer 74ALS157/74ALS158 IEC/IEEE SYMBOL – 74ALS157 1 IEC/IEEE SYMBOL – 74ALS158 1 G1 15 2 MUX 1 3 G1 15 EN EN 2 4 1 5 MUX 1 3 4 1 5 7 6 7 6 11 11 9 10 9 10 14 14 12 13 12 13 SC00055 SC00056 LOGIC DIAGRAM – 74ALS157 E 15 I0a 2 I1a 3 I0b 5 4 Ya I1b 6 7 Yb LOGIC DIAGRAM – 74ALS158 I0c 11 I1c I0d 10 14 I0d 13 9 Yc E S 15 1 I1a 3 I0b 5 4 Ya 12 Yd VCC = Pin 16 GND = Pin 8 I1b 6 7 Yb I0c 11 I1c I0d 10 14 I0d 13 9 Yc S 1 12 Yd VCC = Pin 16 GND = Pin 8 SC00057 FUNCTION TABLE – 74ALS157 INPUTS I0a 2 SC00058 FUNCTION TABLE – 74ALS158 OUTPUTS INPUTS OUTPUTS E S I0n I1n Yn E S I0n I1n Yn H X X X L H X X X H L L L X L L L L X H L L H X H L L H X L L H X L L L H X L H L H X H H L H X H L H = High voltage level L = Low voltage level X = Don’t care 1991 Feb 08 H = High voltage level L = Low voltage level X = Don’t care 3 Philips Semiconductors Product specification Data selector/multiplexer 74ALS157/74ALS158 ABSOLUTE MAXIMUM RATINGS (Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free-air temperature range.) PARAMETER SYMBOL RATING UNIT VCC Supply voltage –0.5 to +7.0 V VIN Input voltage –0.5 to +7.0 V IIN Input current –30 to +5 mA –0.5 to VCC V VOUT Voltage applied to output in High output state IOUT Current applied to output in Low output state Tamb Operating free-air temperature range Tstg Storage temperature range 16 mA 0 to +70 °C –65 to +150 °C RECOMMENDED OPERATING CONDITIONS LIMITS SYMBOL PARAMETER UNIT MIN NOM MAX 5.0 5.5 VCC Supply voltage 4.5 VIH High-level input voltage 2.0 VIL Low-level input voltage 0.8 V IIk Input clamp current –18 mA IOH High-level output current –0.4 mA IOL Low-level output current 8 mA +70 °C Tamb Operating free-air temperature range V V 0 DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL LIMITS TEST CONDITIONS1 PARAMETER MIN VOH High-level output voltage VCC = ±10%, VIL = MAX, VIH = MIN VOL O Low level output voltage Low-level VCC = MIN,, VIL = MAX,, VIH = MIN VIK IOH = MAX TYP2 UNIT MAX VCC – 2 V IOL = 4mA 0.25 0.40 V IOL = 8mA 0.35 0.50 V –0.73 Input clamp voltage VCC = MIN, II = IIK –1.5 V II Input current at minimum input voltage VCC = MAX, VI = 7.0V 0.1 mA IIH High-level input current VCC = MAX, VI = 2.7V 20 µA IIL Low-level input current VCC = MAX, VI = 0.4V –0.1 mA IO Output current3 –112 mA 6 11 mA ICC Supply current (total) 6 10 mA VCC = MAX, VO = 2.25V 74ALS157 74ALS158 VCC = MAX –30 NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25°C. 3. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. 1991 Feb 08 4 Philips Semiconductors Product specification Data selector/multiplexer 74ALS157/74ALS158 AC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER Tamb = 0°C to +70°C VCC = +5.0V ± 10% CL = 50pF, RL = 500Ω TEST CONDITION UNIT MIN MAX Waveform 1 2.0 2.0 9.0 9.0 ns Waveform 1, 3 4.0 4.0 12.0 12.0 ns tPLH tPHL Propagation delay I0n or I1n to Yn tPLH tPHL Propagation delay S to Yn tPLH tPHL Propagation delay E to Yn Waveform 3 4.0 7.0 11.0 14.0 ns tPLH tPHL Propagation delay I0n or I1n to Yn Waveform 2 2.0 2.0 8.0 8.0 ns tPLH tPHL Propagation delay S to Yn Waveform 2, 4 4.0 4.0 12.0 12.0 ns tPLH tPHL Propagation delay E to Yn Waveform 4 4.0 4.0 14.0 14.0 ns 74ALS157 74ALS158 AC WAVEFORMS For all waveforms, VM = 1.3V. I0n, I1n, S VM tPLH tPHL VM Yn, Yn I0n, I1n, S VM VM VM tPHL VM tPLH VM Yn, Yn VM SC00059 SC00060 Waveform 1. Propagation Delay for Data and Select to Output E, S VM E, S VM tPLH Yn, Yn Waveform 2. Propagation Delay for Data and Select to Output tPHL VM VM tPHL VM Yn, Yn SC00061 tPLH VM VM SC00062 Waveform 3. Propagation Delay for Enable and Select to Output 1991 Feb 08 VM Waveform 4. Propagation Delay for Enable and Select to Output 5 Philips Semiconductors Product specification Data selector/multiplexer 74ALS157/74ALS158 TEST CIRCUIT AND WAVEFORMS VCC NEGATIVE PULSE VIN CL RL AMP (V) VM 10% D.U.T. RT 90% VM VOUT PULSE GENERATOR tw 90% 10% tTHL (tff) tTLH (tr ) tTLH (tr ) tTHL (tf ) 0.3V AMP (V) 90% Test Circuit for Totem-pole Outputs POSITIVE PULSE 90% VM VM 10% 10% tw 0.3V Input Pulse Definition DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators. INPUT PULSE REQUIREMENTS Family Amplitude VM 74ALS 3.5V 1.3V Rep.Rate tw tTLH tTHL 1MHz 500ns 2.0ns 2.0ns SC00005 1991 Feb 08 6 Philips Semiconductors Product specification Data selector/multiplexer 74ALS157/74ALS158 DIP16: plastic dual in-line package; 16 leads (300 mil) 1991 Feb 08 7 SOT38-4 Philips Semiconductors Product specification Data selector/multiplexer 74ALS157/74ALS158 SO16: plastic small outline package; 16 leads; body width 3.9 mm 1991 Feb 08 8 SOT109-1 Philips Semiconductors Product specification Data selector/multiplexer 74ALS157/74ALS158 DEFINITIONS Data Sheet Identification Product Status Definition Objective Specification Formative or in Design This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. Preliminary Specification Preproduction Product This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product Specification Full Production This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product. Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. Copyright Philips Electronics North America Corporation 1997 All rights reserved. Printed in U.S.A. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 1991 Feb 08 9