SN74ALS137ANSRE4


  
 
  
 
   
 
 


SDAS203C − APRIL 1982 − REVISED JANUARY 1995 • • • SN54ALS137A . . . J PACKAGE SN74ALS137A, SN74AS137 . . . D OR N PACKAGE (TOP VIEW) Combines Decoder and 3-Bit Address Latch Incorporates Two Output Enables to Simplify Cascading Package Options Include Plastic SmallOutline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs A B C LE G2 G1 Y7 GND description The SN54ALS137A, SN74ALS137A, and SN74AS137 are 3-line to 8-line decoders/ demultiplexers with latches on the three address inputs. When the latch-enable (LE) input is low, the devices act as decoders/demultiplexers. When LE goes from low to high, the address present at the select (A, B, and C) inputs is stored in the latches. Further address changes are ignored as long as LE remains high. The output-enable controls (G1 and G2) control the outputs independently of the select or latch-enable inputs. All of the outputs are forced high if G1 is low or G2 is high. These devices are ideally suited for implementing glitch-free decoders in strobed (stored-address) applications in bus-oriented systems. 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC Y0 Y1 Y2 Y3 Y4 Y5 Y6 B A NC VCC Y0 SN54ALS137A . . . FK PACKAGE (TOP VIEW) 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 Y1 Y2 NC Y3 Y4 Y7 GND NC Y6 Y5 C LE NC G2 G1 The SN54ALS137A is characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74ALS137A and SN74AS137 are characterized for operation from 0°C to 70°C. NC − No internal connection FUNCTION TABLE INPUTS ENABLE OUTPUTS SELECT LE G1 G2 C B X X X L H X X X X X L H L H L L L L L L L H L L H L H L H L L L H L H L L H L L H H H A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 X H H H H H H H H X H H H H H H H H L L H H H H H H H H H L H H H H H H L H H L H H H H H H H H H H L H H H H L L H H H H L H H H H L H H H H H H L H H H H L H H H H H H L H L H H H H H H H H H H L L X X X Outputs corresponding to stored address = L; all others = H Copyright  1995, Texas Instruments Incorporated    !"#$ % &'!!($ #%  )'*+&#$ ,#$(!,'&$% &!" $ %)(&&#$% )(! $.( $(!"%  (/#% %$!'"($% %$#,#!, 0#!!#$1- !,'&$ )!&(%%2 ,(% $ (&(%%#!+1 &+',( $(%$2  #++ )#!#"($(!%- • DALLAS, TEXAS 75265 • HOUSTON, TEXAS 77251−1443 POST OFFICE BOX 655303 POST OFFICE BOX 1443 1 

  
 
  
 
   
 
 


SDAS203C − APRIL 1982 − REVISED JANUARY 1995 logic symbols (alternatives)† 4 C8 LE A B C X/Y 1 8D 2 1 2 3 15 0 4 14 1 13 2 12 3 11 4 G1 6 & 5 5 EN G2 10 9 6 7 7 4 Y0 LE Y1 A Y2 B Y3 C C8 DMUX 1 2 8D 3 2 14 1 0 G Y4 15 0 0 7 13 2 12 3 11 4 Y5 G1 6 5 Y6 G2 Y7 & 10 5 9 6 7 7 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 † 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. logic diagram (positive logic) A 15 1 14 13 Select Inputs B 2 12 Y0 Y1 Y2 Y3 Data Outputs 11 C 10 9 Latch Enable LE 4 7 Output Enables G2 G1 5 6 Pin numbers shown are for the D, J, and N packages. 2 Y4 3 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • Y5 Y6 Y7 

  
 
  
 
   
 
 


SDAS203C − APRIL 1982 − REVISED JANUARY 1995 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: SN54ALS137A . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C SN74ALS137A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 SN54ALS137A SN74ALS137A MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL IOH Low-level input voltage IOL tw Low-level output current Pulse duration, LE low 15 10 ns tsu th Setup time at A, B, and C before LE↑ 15 10 ns TA Operating free-air temperature High-level input voltage 2 2 High-level output current V 0.7 0.8 V −0.4 −0.4 mA 8 mA 4 Hold time at A, B, and C after LE↑ 5 5 −55 V 125 ns 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER SN54ALS137A TYP‡ MAX 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 SN74ALS137A TYP‡ MAX MIN −1.5 VCC − 2 −1.5 VCC − 2 0.25 0.4 0.1 −20 UNIT V V 0.25 0.4 0.35 0.5 0.1 V mA 20 20 µA −0.1 −0.1 mA −112 mA −112 −30 ICC VCC = 5.5 V 5 11 5 11 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. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 3 

  
 
  
 
   
 
 


SDAS203C − APRIL 1982 − REVISED JANUARY 1995 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† SN54ALS137A tPLH tPHL A, B, C Y tPLH tPHL G2 Y tPLH tPHL G1 Y tPLH tPHL LE Y UNIT SN74ALS137A MIN MAX MIN MAX 5 25 5 20 6 25 6 20 4 15 3 12 5 18 4 15 5 21 4 17 5 19 4 15 7 27 6 22 7 25 7 20 ns ns ns ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. 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: SN74AS137 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 SN74AS137 MIN NOM MAX 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL IOH Low-level input voltage 0.8 V High-level output current −2 mA IOL tw Low-level output current 20 mA 6.5 ns tsu th Setup time at A, B, and C before LE↑ 4 ns Hold time at A, B, and C after LE↑ 1 ns TA Operating free-air temperature 0 4 High-level input voltage 2 Pulse duration, LE low • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • V V 70 °C 

  
 
  
 
   
 
 


SDAS203C − APRIL 1982 − REVISED JANUARY 1995 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER SN74AS137 TYP† MAX TEST CONDITIONS MIN VIK VOH VCC = 4.5 V, VCC = 4.5 V to 5.5 V, II = − 18 mA IOH = − 2 mA VOL II VCC = 4.5 V, VCC = 5.5 V, IOL = 20 mA VI = 7 V IIH IIL IO‡ VCC = 5.5 V, VCC = 5.5 V, VI = 2.7 V VI = 0.4 V VCC = 5.5 V, VCC = 5.5 V VO = 2.25 V −1.2 VCC −2 UNIT V V 0.35 −30 0.5 V 0.1 mA 20 µA −1 mA − 112 mA ICC 15 24 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. 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 SN74AS137 tPLH tPHL A, B, C Y tPLH tPHL G2 Y tPLH tPHL G1 Y tPLH tPHL LE Y MIN MAX 2 12.5 2 12.5 2 8 2 8.5 2 10 2 9 3 13.5 3 14 ns 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 

  
 
  
 
   
 
 


SDAS203C − APRIL 1982 − REVISED JANUARY 1995 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 6 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 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) (4/5) (6) SN74ALS137AD ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS137A SN74ALS137AN ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74ALS137AN (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