SN74AS27DR








     
  
SDAS112B − APRIL 1982 − REVISED DECEMBER 1994 SN54ALS27A, SN54AS27 . . . J PACKAGE SN74ALS27A, SN74AS27 . . . D OR N PACKAGE (TOP VIEW) Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs 1A 1B 2A 2B 2C 2Y GND description These devices contain three independent 3-input positive-NOR gates. They perform the Boolean functions Y = A • B • C or Y = A + B + C in positive logic. INPUTS C OUTPUT Y H X X L X H X L X X H L L L L H 13 3 12 4 11 5 10 6 9 7 8 2A NC 2B NC 2C 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 1Y NC 3C NC 3B 2Y GND NC 3Y 3A B 2 VCC 1C 1Y 3C 3B 3A 3Y SN54ALS27A, SN54AS27 . . . FK PACKAGE (TOP VIEW) FUNCTION TABLE (each gate) A 14 1B 1A NC VCC The SN54ALS27A and SN54AS27 are characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74ALS27A and SN74AS27 are characterized for operation from 0°C to 70°C. 1 1C • NC − No internal connection logic symbol† 1A 1B 1C 2A 2B 2C 3A 3B 3C 1 2 logic diagram (positive logic) ≥1 1A 12 13 1Y 1B 1C 3 4 6 5 2A 2Y 2B 2C 9 10 8 11 3A 3Y 3B 3C 1 2 12 1Y 13 3 4 6 2Y 5 9 10 8 3Y 11 † 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 







     
  
SDAS112B − 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: SN54ALS27A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C SN74ALS27A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 SN54ALS27A VCC VIH Supply voltage High-level input voltage SN74ALS27A MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 2 2 UNIT V V VIL Low-level input voltage 0.8‡ 0.7§ IOH IOL High-level output current −0.4 −0.4 mA Low-level output current 4 8 mA 70 °C TA Operating free-air temperature ‡ Applies over temperature range − 55°C to 70°C § Applies over temperature range 70°C to 125°C −55 125 0.8 V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER SN54ALS27A MIN TYP¶ MAX TEST CONDITIONS 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 ICCH ICCL VCC = 5.5 V, VCC = 5.5 V, VI = 0 VI = 4.5 V SN74ALS27A MIN TYP¶ MAX −1.5 VCC − 2 −1.5 VCC − 2 0.25 0.4 V V 0.25 0.4 0.35 0.5 0.1 −20 UNIT 0.1 V mA 20 20 µA −0.1 −0.1 mA −112 mA 0.97 −112 1.8 −30 0.97 1.8 mA 2 4 2 4 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. 2 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 







     
  
SDAS112B − APRIL 1982 − REVISED DECEMBER 1994 switching characteristics (see Figure 1) FROM (INPUT) PARAMETER VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† TO (OUTPUT) SN54ALS27A tPLH tPHL A, B, or C Y UNIT SN74ALS27A MIN MAX MIN MAX 4 26 3 15 1 11 1 9 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: SN54AS27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C SN74AS27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 SN54AS27 SN74AS27 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 20 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 SN54AS27 MIN TYP§ MAX TEST CONDITIONS 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 = 0 ICCH ICCL SN74AS27 MIN TYP§ MAX −1.2 VCC − 2 −1.2 VCC − 2 0.35 0.5 0.35 0.5 V 0.1 mA 20 20 µA −0.5 −0.5 mA −112 mA 6.4 mA −112 4 V V 0.1 −30 UNIT 6.4 −30 4 VCC = 5.5 V, VI = 4.5 V 10.6 17.1 10.6 17.1 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 







     
  
SDAS112B − APRIL 1982 − REVISED DECEMBER 1994 switching characteristics (see Figure 1) PARAMETER tPLH tPHL FROM (INPUT) TO (OUTPUT) A, B, or C Y VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† SN54AS27 SN74AS27 MIN MAX MIN MAX 1 6.5 1 5.5 1 5 1 4.5 † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. 4 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • UNIT ns 







     
  
SDAS112B − 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 3.5 V High-Level Pulse 1.3 V R2 LOAD CIRCUIT FOR 3-STATE OUTPUTS LOAD CIRCUIT FOR OPEN-COLLECTOR OUTPUTS 3.5 V Timing Input Test Point From Output Under Test 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 SETUP AND HOLD TIMES VOLTAGE WAVEFORMS PULSE DURATIONS 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 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 5 PACKAGE OPTION ADDENDUM www.ti.com 2-Dec-2023 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) 5962-86838012A ACTIVE LCCC FK 20 55 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 596286838012A SNJ54ALS 27AFK 5962-8683801DA ACTIVE CFP W 14 25 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-8683801DA SNJ54ALS27AW Samples JM38510/37302BCA ACTIVE CDIP J 14 25 Non-RoHS & Green SNPB N / A for Pkg Type JM38510/ 37302BCA Samples M38510/37302BCA ACTIVE CDIP J 14 25 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 JM38510/ 37302BCA Samples SN54ALS27AJ ACTIVE CDIP J 14 25 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 SN54ALS27AJ Samples Samples SN74ALS27AD LIFEBUY SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS27A SN74ALS27ADR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS27A Samples SN74ALS27AN ACTIVE PDIP N 14 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74ALS27AN Samples SN74ALS27ANSR ACTIVE SO NS 14 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 ALS27A Samples SN74AS27D LIFEBUY SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 AS27 SN74AS27N ACTIVE PDIP N 14 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74AS27N SNJ54ALS27AFK ACTIVE LCCC FK 20 55 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 596286838012A SNJ54ALS 27AFK SNJ54ALS27AJ ACTIVE CDIP J 14 25 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 SNJ54ALS27AJ Samples SNJ54ALS27AW ACTIVE CFP W 14 25 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-8683801DA SNJ54ALS27AW Samples (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. Addendum-Page 1 Samples Samples PACKAGE OPTION ADDENDUM www.ti.com 2-Dec-2023 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