SN74AS157NSR












     

 
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 SN54ALS157A, SN54ALS158 . . . J PACKAGE SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 . . . D OR N PACKAGE (TOP VIEW) Buffered Inputs and Outputs Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs A /B 1A 1B 1Y 2A 2B 2Y GND description These data selectors/multiplexers contain inverters and drivers to supply full data selection to the four output gates. A separate strobe (G) input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The ′ALS157A and SN74AS157 present true data. The ′ALS158 and SN74AS158 present inverted data to minimize propagation delay time. 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC G 4A 4B 4Y 3A 3B 3Y SN54ALS157A, SN54ALS158 . . . FK PACKAGE (TOP VIEW) 1A A/B NC VCC The SN54ALS157A and SN54ALS158 are characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74ALS157A, SN74ALS158, SN74AS157, and SN74AS158 are characterized for operation from 0°C to 70°C. 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 4A 4B NC 4Y 3A 2Y GND NC 3Y 3B 1B 1Y NC 2A 2B G • • NC − No internal connection FUNCTION TABLE INPUTS OUTPUT Y DATA A B ′ALS157A ALS157A SN74AS157 ′ALS158 ALS158 SN74AS158 X X L H L L X L H L H X H L L H X L L H L H X H H L G A /B H X L L Copyright  1994, Texas Instruments Incorporated    !"#$ % &'!!($ #%  )'*+&#$ ,#$(!,'&$% &!" $ %)(&&#$% )(! $.( $(!"%  (/#% %$!'"($% %$#,#!, 0#!!#$1- !,'&$ )!&(%%2 ,(% $ (&(%%#!+1 &+',( $(%$2  #++ )#!#"($(!%- • DALLAS, TEXAS 75265 • HOUSTON, TEXAS 77251−1443 POST OFFICE BOX 655303 POST OFFICE BOX 1443 1 











    

 
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 logic symbols† ′ALS157A, SN74AS157 15 G 1 A /B 1A 1B 2A 2B 3A 3B 4A 4B EN G G1 A /B 2 3 ′ALS158, SN74AS158 15 1 MUX 4 1 1A 1Y 1B 5 6 7 2A 2Y 2B 11 10 9 3A 3Y 3B 14 13 12 4A 4Y 4B 1 3 • 1 MUX 4 1 1Y 5 6 7 2Y 11 10 9 3Y 14 13 POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • G1 2 † These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, J, and N packages. 2 EN 12 4Y 











    

 
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 logic diagrams (positive logic) 1A 2 ′ALS157A 1A 4 1B 2A 3 5 2A 7 2B 3A 11 3A 9 3B 4A 14 4A 12 4B G A /B 6 4B 15 G A /B 1 10 13 2A 1A 3 15 1 5 2A 3A 6 11 3A 9 3B 4A 14 4A G A /B 13 6 4B 15 G 1 A /B 2Y 11 10 3Y 14 12 4Y 1Y 5 9 3Y 3B 12 4B 3 7 2Y 2B 10 2 4 1Y 1B 7 2B 4Y SN74AS158 2 4 1B 3Y 14 SN74AS157 1A 2Y 11 12 4Y 1Y 5 9 3Y 3B 13 3 7 2Y 2B 10 ′ALS158 4 1Y 1B 6 2 13 4Y 15 1 Pin numbers shown are for the D, J, and N packages. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 3 











    

 
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range, TA: SN54ALS157A, SN54ALS158 . . . . . . . . . . . . . . . −55°C to 125°C SN74ALS157A, SN74ALS158 . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. recommended operating conditions SN54ALS157A SN54ALS158 VCC VIH Supply voltage VIL IOH Low-level input voltage IOL TA High-level input voltage SN74ALS157A SN74ALS158 UNIT MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 2 2 V V 0.7 0.8 V High-level output current −0.4 −0.4 mA Low-level output current 4 8 mA 70 °C Operating free-air temperature −55 125 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER SN54ALS157A SN54ALS158 TEST CONDITIONS MIN VIK VOH VCC = 4.5 V, VCC = 4.5 V to 5.5 V, II = − 18 mA IOH = − 0.4 mA VOL VCC = 4.5 V IOL = 4 mA IOL = 8 mA II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V IIL IO§ VCC = 5.5 V, VCC = 5.5 V, VI = 0.4 V VO = 2.25 V ICC ′ALS157A ′ALS158 VCC = 5.5 V, TYP‡ SN74ALS157A SN74ALS158 MAX MIN TYP‡ −1.2 VCC − 2 UNIT MAX −1.2 VCC − 2 0.25 0.4 V 0.25 0.4 0.35 0.5 0.1 −20 See Note 1 V 0.1 V mA 20 20 µA −0.1 −0.1 mA −112 mA −112 −30 6 11 6 11 5 10 5 10 mA ‡ All typical values are at VCC = 5 V, TA = 25°C. § The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. NOTE 1: ICC is measured with 4.5 V applied to all inputs and all outputs open. 4 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 











    

 
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 switching characteristics (see Figure 1) PARAMETER FROM (INPUT) VCC = 5 V, CL = 50 pF, RL = 500 Ω, TA = 25°C TO (OUTPUT) ′ALS157A tPLH tPHL A or B Y tPLH tPHL A/B Y tPLH tPHL G Y VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† SN54ALS157A UNIT SN74ALS157A TYP MIN MAX MIN MAX 9 4 17 4 14 6 2 15 2 12 15 7 28 7 24 9 4 20 4 17 14 7 25 7 20 10 4 18 4 13 ns ns ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. switching characteristics (see Figure 1) PARAMETER FROM (INPUT) VCC = 5 V, CL = 50 pF, RL = 500 Ω, TA = 25°C TO (OUTPUT) tPLH tPHL A or B Y tPLH tPHL A/B Y tPLH tPHL G Y ′ALS158 VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† SN54ALS158 UNIT SN74ALS158 TYP MIN MAX MIN MAX 9 4 18 4 15 5 2 12 2 8 13 5 22 5 18 13 5 22 5 18 13 5 22 5 18 13 5 22 5 18 ns ns ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 5 











    

 
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range, TA: SN74AS157, SN74AS158 . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. recommended operating conditions SN74AS157 SN74AS158 UNIT MIN NOM MAX 4.5 5 5.5 VCC VIH Supply voltage VIL IOH Low-level input voltage 0.8 V High-level output current −2 mA IOL TA Low-level output current 20 mA 70 °C High-level input voltage 2 Operating free-air temperature V V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN74AS157 SN74AS158 MIN VIK VOH VOL VCC = 4.5 V, VCC = 4.5 V to 5.5 V, II = − 18 mA IOH = − 2 mA VCC = 4.5 V, IOL = 20 mA TYP‡ −1.2 VCC − 2 A, B, or G 0.35 A, B, or G VCC = 5.5 V, VI = 7 V VCC = 5.5 V, VI = 2.7 V 20 VCC = 5.5 V, VI = 0.4 V −0.5 VCC = 5.5 V, VO = 2.25 V 0.1 40 A/B IIL A, B, or G IO§ ICC SN74AS157 SN74AS158 0.5 V 0.2 A/B IIH V V A/B II UNIT MAX mA µA A −1 VCC = 5.5 V −30 −112 17.5 28 15.6 22.5 mA mA mA ‡ All typical values are at VCC = 5 V, TA = 25°C. § The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. 6 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 











    

 
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† UNIT SN74AS157 MIN tPLH tPHL A or B Y tPLH tPHL A/B Y tPLH tPHL G Y MAX 1 6 1 5.5 2 11 2 10 2 10.5 2 7.5 ns ns ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† UNIT SN74AS158 MIN tPLH tPHL A or B Y tPLH tPHL A/B Y tPLH tPHL G Y MAX 1 5 1 4.5 2 9.5 2 10.5 2 6.5 2 10 ns ns ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 7 











    

 
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994 PARAMETER MEASUREMENT INFORMATION SERIES 54ALS/74ALS AND 54AS/74AS DEVICES 7V RL = R1 = R2 VCC S1 RL R1 Test Point From Output Under Test CL (see Note A) From Output Under Test RL Test Point CL (see Note A) CL (see Note A) LOAD CIRCUIT FOR BI-STATE TOTEM-POLE OUTPUTS LOAD CIRCUIT FOR OPEN-COLLECTOR OUTPUTS 3.5 V Timing Input Test Point From Output Under Test LOAD CIRCUIT FOR 3-STATE OUTPUTS 3.5 V High-Level Pulse 1.3 V R2 1.3 V 1.3 V 0.3 V 0.3 V tsu Data Input tw th 3.5 V 1.3 V 3.5 V Low-Level Pulse 1.3 V 0.3 V 1.3 V 0.3 V VOLTAGE WAVEFORMS PULSE DURATIONS VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 3.5 V Output Control (low-level enabling) 1.3 V 1.3 V 0.3 V tPZL Waveform 1 S1 Closed (see Note B) tPLZ 3.5 V Input tPZH 1.3 V 0.3 V tPHL tPLH VOH In-Phase Output VOL 0.3 V 1.3 V 1.3 V VOL tPLH tPHL VOH 1.3 V 1.3 V [3.5 V 1.3 V tPHZ Waveform 2 S1 Open (see Note B) 1.3 V VOH Out-of-Phase Output (see Note C) 0.3 V [0 V 1.3 V 1.3 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. When measuring propagation delay items of 3-state outputs, switch S1 is open. D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%. E. The outputs are measured one at a time with one transition per measurement. Figure 1. Load Circuits and Voltage Waveforms 8 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) 5962-86869012A ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 596286869012A SNJ54ALS 157AFK 5962-8686901EA ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-8686901EA SNJ54ALS157AJ Samples 5962-8862501EA ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-8862501EA SNJ54ALS158J Samples SN54ALS157AJ ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 SN54ALS157AJ Samples SN74ALS157AD ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS157A Samples SN74ALS157ADR ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS157A Samples SN74ALS157AN ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74ALS157AN Samples SN74ALS157ANSR ACTIVE SO NS 16 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS157A Samples SN74ALS158D ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS158 Samples SN74ALS158N ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74ALS158N Samples SN74ALS158NSR ACTIVE SO NS 16 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS158 Samples SN74AS157D ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 AS157 Samples SN74AS157N ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74AS157N Samples SN74AS158D ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 AS158 Samples SN74AS158N ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74AS158N Samples SNJ54ALS157AFK ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 596286869012A SNJ54ALS 157AFK SNJ54ALS157AJ ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-8686901EA SNJ54ALS157AJ Addendum-Page 1 Samples Samples Samples PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 14-Oct-2022 Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) (3) Device Marking Samples (4/5) (6) SNJ54ALS158J ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-8862501EA SNJ54ALS158J (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of