SN74ALS1245ANSR

SN54ALS1245A, SN74ALS1245A OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDAS245A – DECEMBER 1982 – REVISED JANUARY 1995 • • • • Bidirectional Bus Transceivers in High-Density 20-Pin Packages Low-Power Versions of ′ALS245 Series ′ALS1245 Series Is Identical to ′ALS1645 Series Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs SN54ALS1245A . . . J PACKAGE SN74ALS1245A . . . DW OR N PACKAGE (TOP VIEW) DIR A1 A2 A3 A4 A5 A6 A7 A8 GND description The SN54ALS1245A is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74ALS1245A is characterized for operation from 0°C to 70°C. DIR A3 A4 A5 A6 A7 OPERATION L L B data to A bus L H A data to B bus H X Isolation 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC OE B1 B2 B3 B4 B5 B6 B7 B8 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 B1 B2 B3 B4 B5 A8 GND B8 B7 B6 OE 19 SN54ALS1245A . . . FK PACKAGE (TOP VIEW) FUNCTION TABLE INPUTS 20 2 A2 A1 DIR VCC OE These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the directioncontrol (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated. 1 Copyright  1995, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54ALS1245A, SN74ALS1245A OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDAS245A – DECEMBER 1982 – REVISED JANUARY 1995 logic symbol† OE DIR A1 19 1 2 logic diagram (positive logic) 19 OE G3 3EN1 [BA] 3EN2 [AB] 18 1 1 DIR B1 2 A2 A3 A4 A5 A6 A7 A8 3 17 4 16 5 15 6 14 7 13 8 12 9 11 B2 2 A1 18 B1 B3 B4 B5 B6 To Seven Other Transceivers B7 B8 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI: All inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V I/O ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Operating free-air temperature range, TA: SN54ALS1245A . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C SN74ALS1245A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 SN54ALS1245A VCC VIH Supply voltage VIL IOH Low-level input voltage IOL TA Low-level output current 2 High-level input voltage SN74ALS1245A MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 2 High-level output current 2 – 55 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 V V 0.7 0.8 V – 12 – 15 mA 16 mA 70 °C 8 Operating free-air temperature UNIT 125 0 SN54ALS1245A, SN74ALS1245A OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDAS245A – DECEMBER 1982 – REVISED JANUARY 1995 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH VOL II A or B ports MIN VCC = 4.5 V, VCC = 4.5 V to 5.5 V, II = – 18 mA IOH = – 0.4 mA VCC = 4.5 V IOH = – 3 mA IOH = – 12 mA VCC = 5 5.5 5V SN74ALS1245A TYP† MAX MIN –1.5 VCC – 2 2.4 –1.5 VCC – 2 2.4 3.2 3.2 UNIT V V 2 IOH = – 15 mA IOL= 8 mA VCC = 4 4.5 5V Control inputs SN54ALS1245A TYP† MAX TEST CONDITIONS 2 0.25 0.4 0.25 0.4 0.35 0.5 IOL = 16 mA VI = 7 V 0.1 0.1 VI = 5.5 V 0.1 0.1 20 20 20 20 – 0.1 – 0.1 – 0.1 – 0.1 IIH Control inputs A or B ports‡ 5V VCC = 5 5.5 V, 7V VI = 2 2.7 IIL Control inputs A or B ports‡ VCC = 5 5.5 5V V, VI = 0 0.4 4V IO§ VCC = 5.5 V, VO = 2.25 V Outputs high 21 33 21 30 ICC VCC = 5.5 V Outputs low 23 36 23 33 Outputs disabled 25 40 25 36 – 20 –112 – 30 –112 V mA µA mA mA mA † All typical values are VCC = 5 V, TA = 25°C. ‡ For I/O ports, the parameters IIH and IIL include the off-state output current. § 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) tPLH tPHL A or B B or A tPZH tPZL OE A or B tPHZ tPLZ OE A or B VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX¶ SN54ALS1245A SN74ALS1245A MIN MAX MIN MAX 2 19 2 13 2 15 2 13 8 30 8 25 8 29 8 25 2 14 2 12 3 30 3 18 UNIT 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 3 SN54ALS1245A, SN74ALS1245A OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDAS245A – DECEMBER 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 From Output Under Test 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 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 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 1.3 V tPHZ tPZH Waveform 2 S1 Open (see Note B) 1.3 V VOL 0.3 V VOH 1.3 V 0.3 V [0 V 3.5 V 1.3 V Input 1.3 V 0.3 V tPHL tPLH VOH In-Phase Output 1.3 V 1.3 V VOL tPLH tPHL VOH Out-of-Phase Output (see Note C) 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 PACKAGE OPTION ADDENDUM www.ti.com 10-Jun-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) 5962-88737012A ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 596288737012A SNJ54ALS 1245AFK 5962-8873701RA ACTIVE CDIP J 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-8873701RA SNJ54ALS1245AJ Samples SN74ALS1245AN ACTIVE PDIP N 20 20 RoHS & Non-Green NIPDAU N / A for Pkg Type 0 to 70 SN74ALS1245AN Samples SNJ54ALS1245AFK ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 596288737012A SNJ54ALS 1245AFK SNJ54ALS1245AJ ACTIVE CDIP J 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-8873701RA SNJ54ALS1245AJ (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