SN74ALS21ADRE4








     
 
SDAS085B − APRIL 1982 − REVISED DECEMBER 1994 SN54ALS21A, SN54AS21 . . . J PACKAGE SN74ALS21A, SN74AS21 . . . D OR N PACKAGE (TOP VIEW) 1A 1B NC 1C 1D 1Y GND description These devices contain two independent 4-input positive-AND gates. They perform the Boolean functions Y = A • B • C • D or Y = A + B + C + D in positive logic. The SN54ALS21A and SN54AS21 are characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74ALS21A and SN74AS21 are characterized for operation from 0°C to 70°C. FUNCTION TABLE (each gate) INPUTS B C D OUTPUT Y H H H H H L X X X L X L X X L X X L X L X X X L L 1B 1C 1D 2A 2B 2C 2D 1 2 13 3 12 4 11 5 10 6 9 7 8 VCC 2D 2C NC 2B 2A 2Y SN54ALS21A, SN54AS21 . . . FK PACKAGE (TOP VIEW) NC NC 1C NC 1D 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 2C NC NC NC 2B NC − No internal connection logic symbol† 1A 14 1Y GND NC 2Y 2A A 1 2D Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs 1B 1A NC VCC • logic diagram (positive logic) & 1A 2 6 4 1B 1Y 1C 5 1D 9 2A 10 8 12 2B 2Y 2C 13 2D 1 2 6 4 1Y 5 9 10 12 8 2Y 13 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, J, and N packages. Copyright  1994, Texas Instruments Incorporated     ! "#$ !  %#&'" ($) (#"! "  !%$""! %$ *$ $!  $+! !#$! !(( ,-) (#" %"$!!. ($!  $"$!!'- "'#($ $!.  '' %$$!) • DALLAS, TEXAS 75265 • HOUSTON, TEXAS 77251−1443 POST OFFICE BOX 655303 POST OFFICE BOX 1443 1 







     
 
SDAS085B − 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: SN54ALS21A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C SN74ALS21A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 SN54ALS21A SN74ALS21A 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 0.8 0.8 V High-level output current −0.4 −0.4 mA IOL TA Low-level output current 4 8 mA 70 °C High-level input voltage 2 Operating free-air temperature 2 −55 125 V V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH SN54ALS21A TYP‡ MAX TEST CONDITIONS MIN 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 ICCH ICCL VCC = 5.5 V, VCC = 5.5 V, VI = 4.5 V VI = 0 SN74ALS21A TYP‡ MAX MIN −1.5 VCC − 2 −1.5 VCC − 2 0.25 V V 0.4 0.25 0.4 0.35 0.5 V 0.1 0.1 mA 20 20 µA −0.1 −20 UNIT −112 −30 −0.1 mA −112 mA mA 0.85 1.4 0.85 1.4 1.4 2.3 1.4 2.3 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¶ SN54ALS21A tPLH tPHL A, B, C, or D Y SN74ALS21A MIN MAX MIN MAX 4 18 4 15 2 15 2 10 ¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. 2 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • UNIT ns 







     
 
SDAS085B − 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: SN54AS21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C SN74AS21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 SN54AS21 SN74AS21 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 0.8 0.8 V High-level output current −2 −2 mA IOL TA Low-level output current 20 mA 70 °C High-level input voltage 2 2 V 20 Operating free-air temperature −55 125 V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER SN54AS21 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 VI = 4.5 V ICCH ICCL SN74AS21 TYP‡ MAX MIN −1.2 VCC − 2 −1.2 VCC − 2 0.35 0.5 0.5 V 0.1 0.1 mA 20 20 µA −112 2.9 V V 0.35 −0.5 −30 UNIT −30 4.6 2.9 −0.5 mA −112 mA 4.6 mA VCC = 5.5 V, VI = 0 7.4 12 7.4 12 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 tPLH tPHL FROM (INPUT) TO (OUTPUT) A, B, C, or D Y VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX¶ SN54AS21 SN74AS21 UNIT MIN MAX MIN MAX 1 6.5 1 6 1 6.5 1 6 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 • 3 







     
 
SDAS085B − 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 4 • 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) 84143012A ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 84143012A SNJ54ALS 21AFK 8414301CA ACTIVE CDIP J 14 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 8414301CA SNJ54ALS21AJ Samples SN54ALS21AJ ACTIVE CDIP J 14 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 SN54ALS21AJ Samples SN74ALS21AD ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS21A Samples SN74ALS21ADR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS21A Samples SN74ALS21AN ACTIVE PDIP N 14 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74ALS21AN Samples SN74ALS21ANSR ACTIVE SO NS 14 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS21A Samples SN74AS21D ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 AS21 Samples SN74AS21N ACTIVE PDIP N 14 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74AS21N Samples SN74AS21NS ACTIVE SO NS 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM 74AS21 Samples SN74AS21NSR ACTIVE SO NS 14 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 74AS21 Samples SNJ54ALS21AFK ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 84143012A SNJ54ALS 21AFK SNJ54ALS21AJ ACTIVE CDIP J 14 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 8414301CA SNJ54ALS21AJ (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. Addendum-Page 1 Samples Samples Samples PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 (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