SN74LS243D

SN54LS243, SN74LS243 www.ti.com ............................................................................................................................................................. SDLS145A – APRIL 1985 – REVISED JULY 2008 QUADRUPLE BUS TRANSCEIVERS FEATURES 1 • • • Two-Way Asynchronous Communication Between Data Buses PNP Inputs Reduce D-C Loading Hysteresis (Typically 400 mV) at Inputs Improves Noise Margin SN54LS243 . . . J OR W PACKAGE SN74LS243 . . . D, N, OR NS PACKAGE (TOP VIEW) GAB 1 14 VCC NC 2 13 GBA A1 3 12 NC A2 4 11 B1 A3 5 10 B2 A4 6 9 B3 GND 7 8 B4 FUNCTION TABLE (EACH TRANSCEIVER) INPUTS SNxxLS243 GAB GBA L L H H B to A H L Isolation L H Latch A and B (A = B) A to B DESCRIPTION These four-data-line transceivers are designed for asynchronous two-way communications between data buses. SN74LS243 can be used to drive terminated lines down to 133 Ω. SN54LS243 is characterized for operation over the full military temperature range of –55°C to 125°C. SN74LS243 is characterized for operation from 0°C to 70°C. SCHEMATICS OF INPUTS AND OUTPUTS TYPICAL OF ALL OUTPUTS EQUIVALENT OF EACH INPUT VCC VCC 50 Ω NOM 17 kΩ INPUT OUTPUT GND 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 1985–2008, Texas Instruments Incorporated SN54LS243, SN74LS243 SDLS145A – APRIL 1985 – REVISED JULY 2008 ............................................................................................................................................................. www.ti.com LOGIC SYMBOL GBA GAB A1 13 1 3 EN1 EN2 11 1 B1 2 A2 A3 A4 A. 4 10 5 9 6 8 B2 B3 B4 These symbols are in accordance with ANSI/EEE Std. 91-1984 and IEC Publication 617-12. LOGIC DIAGRAM (POSITIVE LOGIC) 1 GAB 2 Submit Documentation Feedback 13 GBA A1 3 11 B1 A2 4 10 B2 A3 5 9 B3 A4 6 8 B4 Copyright © 1985–2008, Texas Instruments Incorporated Product Folder Link(s): SN54LS243 SN74LS243 SN54LS243, SN74LS243 www.ti.com ............................................................................................................................................................. SDLS145A – APRIL 1985 – REVISED JULY 2008 ABSOLUTE MAXIMUM RATINGS (1) MIN VCC Supply voltage VIN Input voltage MAX (2) OFF-state output voltage TA Operating free-air temperature range Tstg Storage temperature range (1) (2) UNIT 7 V 7 V 5.5 V SN54LS243 –55 125 SN74LS243 0 70 –65 150 °C °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. Voltage values are with respect to network ground terminal. RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) SN54LS243 SN74LS243 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.75 5 5.25 UNIT VCC Supply voltage (1) VIH High-level input voltage VIL Low-level input voltage 0.7 0.8 V IOH High-level output voltage –12 –15 mA IOL Low-level output voltage 12 24 mA TA Operating free-air temperature 70 °C (1) 2 –55 2 125 0 V V Voltage values are with respect to network ground terminal. Copyright © 1985–2008, Texas Instruments Incorporated Product Folder Link(s): SN54LS243 SN74LS243 Submit Documentation Feedback 3 SN54LS243, SN74LS243 SDLS145A – APRIL 1985 – REVISED JULY 2008 ............................................................................................................................................................. www.ti.com ELECTRICAL CHARACTERISTICS over operating free-air temperature range (unless otherwise noted) VIK A or B Hysteresis (VT+ – VT–) VOH SN54LS243 TEST CONDITIONS (1) PARAMETER VCC = MIN, II = –18 mA VIH = 2 V, MIN TYP (2) MAX –1.5 VCC = MIN, VCC = MIN, SN74LS243 TYP (2) MAX MIN VIL = MAX, IOH = –3 mA VIL = 0.5 V, IOH = MAX –1.5 UNIT V 0.2 0.4 0.2 0.4 V 2.4 3.1 2.4 3.1 V 2 2 VOL VCC = MIN, VIL = MAX VIH = 2 V, IOZH VCC = MIN, VIL = MAX, VIH = 2 V, VO = 2.7 V 40 40 µA IOZL VCC = MIN, VIL = MAX, VIH = 2 V, VO = 0.4 V –200 –200 µA VI = 5.5 V 0.1 0.1 VI = 7 V 0.1 0.1 20 20 –0.2 –0.2 –0.2 –0.2 II A or B GAB or GBA IIH 0.25 B inputs GAB or GBA IOS VCC = MAX, VCC = MAX, VI = 0.4 V, GAB and GBA at 0 V VCC = MAX, VI = 0.4 V, GAB and GBA at 4.5 V VCC = MAX, VI = 0.4 V, Outputs low VCC = MAX, (3) –40 –225 Outputs open, All outputs disabled (1) (2) (3) 0.25 0.4 0.35 0.5 –0.2 VCC = MAX Outputs high ICC 0.4 IOL = 24 mA VCC = MAX, A inputs IIL IOL = 12 mA V mA µA mA –0.2 –40 –225 22 38 22 38 29 50 29 50 32 54 32 54 mA mA For conditions shown as MIN or MAX, use the appropriate value specified under "recommended operating conditions." All typical values are at VCC = 5 V, TA = 25°C. ICC is measured with transceivers eabled in one direction only, or with all transceivers disabled. SWITCHING CHARACTERISTICS VCC = 5 V, TA = 25°C PARAMETER SN54LS243 MAX tPLH 9 tPHL 12 MAX 14 12 18 ns 18 12 18 ns 20 30 20 30 ns tPZH 15 23 15 23 ns tPLZ 10 20 10 20 ns 15 25 15 25 ns tPHZ RL = 667 Ω, Submit Documentation Feedback CL = 45 pF CL = 5 pF MIN UNIT TYP RL = 667 Ω, MIN SN74LS243 TYP tPZL 4 TEST CONDITIONS Copyright © 1985–2008, Texas Instruments Incorporated Product Folder Link(s): SN54LS243 SN74LS243 PACKAGE OPTION ADDENDUM www.ti.com 14-Aug-2021 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) 8002002CA ACTIVE CDIP J 14 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 8002002CA SNJ54LS243J 8002002DA ACTIVE CFP W 14 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 8002002DA SNJ54LS243W SN54LS243J ACTIVE CDIP J 14 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 SN54LS243J SN74LS243D ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 LS243 SN74LS243DR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 LS243 SN74LS243N ACTIVE PDIP N 14 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74LS243N SN74LS243NE4 ACTIVE PDIP N 14 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN74LS243N SNJ54LS243J ACTIVE CDIP J 14 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 8002002CA SNJ54LS243J SNJ54LS243W ACTIVE CFP W 14 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 8002002DA SNJ54LS243W (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