SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A - MARCH 1987 - REVISED OCTOBER 1993 SN54F245 . . . J PACKAGE SN74F245 . . . DB, DW, OR N PACKAGE (TOP VIEW) 3-State Outputs Drive Bus Lines Directly Package Options Include Plastic Small-Outline (SOIC) and Shrink Small-Outline (SSOP) Packages, Ceramic Chip Carriers, and Plastic and Ceramic DIPs DIR A1 A2 A3 A4 A5 A6 A7 A8 GND description These octal bus transceivers are designed for asynchronous communication between data buses. The devices transmit data from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the direction-control (DIR) input. The output enable (OE) input can be used to disable the device so the buses are effectively isolated. 1 20 2 19 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 SN54F245 . . . FK PACKAGE (TOP VIEW) A2 A1 DIR VCC The SN74F245 is available in TI's shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area. A3 A4 A5 A6 A7 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 The SN54F245 is characterized for operation over the full military temperature range of - 55C to 125C. The SN74F245 is characterized for operation from 0C to 70C. OE * * FUNCTION TABLE INPUTS OPERATION OE DIR L L B data to A bus L H A data to B bus H X Isolation Copyright 1993, 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 2-1 SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A - MARCH 1987 - REVISED OCTOBER 1993 logic symbol OE DIR A1 19 1 2 logic diagram (positive logic) DIR G3 1 3EN1[BA] 3EN2[AB] 19 18 1 B1 A1 OE 2 2 A2 A3 A4 A5 A6 A7 A8 3 17 4 16 5 15 6 14 7 13 8 12 9 11 B2 18 B3 B1 B4 B5 B6 B7 To Seven Other Channels 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 range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.5 V to 7 V Input voltage range, VI (except I/O ports) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 1.2 V to 7 V Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 30 mA to 5 mA Voltage range applied to any output in the disabled or power-off state . . . . . . . . . . . . . . . . . . . - 0.5 V to 5.5 V Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.5 V to VCC Current into any output in the low state: SN54F245 (A1 thru A8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA SN54F245 (B1 thru B8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74F245 (A1 thru A8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA SN74F245 (B1 thru B8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Operating free-air temperature range: SN54F245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to 125C SN74F245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to 70C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C 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. NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed. 2-2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A - MARCH 1987 - REVISED OCTOBER 1993 recommended operating conditions SN54F245 VCC VIH Supply voltage VIL IIK Low-level input voltage IOH High level output current High-level IOL Low level output current Low-level TA Operating free-air temperature High-level input voltage SN74F245 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 2 2 UNIT V V 0.8 0.8 V - 18 - 18 mA A1 thru A8 -3 -3 B1 thru B8 - 12 - 15 A1 thru A8 20 24 B1 thru B8 48 64 Input clamp current - 55 125 0 70 mA mA C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VCC = 4.5 V, A1 thru A8 VOH 5V VCC = 4 4.5 IIL IOS II = - 18 mA IOH = - 1 mA IOH = - 3 mA IOH = - 12 mA 3.4 2.5 3.4 2.4 3.3 2.4 3.3 2 3.2 A1 thru A8 VCC = 4 4.5 5V IOL = 20 mA IOL = 24 mA 0.3 0.5 VCC = 4 4.5 5V IOL = 48 mA IOL = 64 mA 0.38 0.55 5V VCC = 5 5.5 VI = 5.5 V VI = 7 V VCC = 5 5.5 5V V, VI = 2 2.7 7V VCC = 5 5.5 5V V, VI = 0 0.5 5V VCC = 5 5.5 5V V, VO = 0 A and B DIR, OE A and B DIR, OE A1 thru A8 B1 thru B8 IOH = - 15 mA IOH = - 1 mA to - 3 mA 2 3.1 0.35 0.5 0.42 0.55 1 1 0.1 0.1 70 70 20 20 - 0.65 - 0.65 - 1.2 - 1.2 - 60 - 150 - 60 - 150 - 100 - 225 - 100 - 225 70 90 70 90 Outputs low 95 120 95 120 Outputs disabled 85 110 85 All typical values are at VCC = 5 V, TA = 25C. For I/O ports, the parameters IIH and IIL include the off-state output current. Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second. 110 VCC = 5.5 V POST OFFICE BOX 655303 V 2.7 Outputs high ICC UNIT V VCC = 4.75 V, DIR, OE - 1.2 2.5 Any output A and B SN74F245 TYP MAX MIN - 1.2 VCC = 4 4.5 5V B1 thru B8 IIH MIN B1 thru B8 VOL II SN54F245 TYP MAX TEST CONDITIONS * DALLAS, TEXAS 75265 V mA A mA mA mA 2-3 SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A - MARCH 1987 - REVISED OCTOBER 1993 switching characteristics (see Note 2) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 5 V, CL = 50 pF, RL = 500 , TA = 25C VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 , TA = MIN to MAX F245 tPLH tPHL A or B B or A tPZH tPZL OE A or B tPHZ tPLZ OE A or B SN54F245 SN74F245 MIN TYP MAX MIN MAX MIN MAX 1.7 3.8 6 1.2 7.5 1.7 7 1.7 4.2 6 1.2 7.5 1.7 7 2.2 4.9 7 1.7 9 2.2 8 2.7 5.6 8 2.2 10 2.7 9 2.2 4.6 6.5 1.7 9 2.2 7.5 1.2 4.6 6.5 1.2 10 1.2 7.5 For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 2: Load circuits and waveforms are shown in Section 1. 2-4 POST OFFICE BOX 655303 UNIT * DALLAS, TEXAS 75265 ns ns ns IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. 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Copyright 1998, Texas Instruments Incorporated 1 of 3 Products Development Tools Applications Search >> Semiconductor Home > Products > Digital Logic > Transceivers > Standard Transceivers > SN54F245, OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS Device Status: Active > Description > Features > Datasheets > Pricing/Samples/Availability > Application Notes > Related Documents Parameter Name SN54F245 Voltage Nodes (V) 5 Vcc range (V) 4.5 to 5.5 Input Level TTL Output Level TTL No. of Outputs 8 Logic True Description These octal bus transceivers are designed for asynchronous communication between data buses. The devices transmit data from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the direction-control (DIR) input. The output enable input can be used to disable the device so the buses are effectively isolated. The SN74F245 is available in TI's shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area. The SN54F245 is characterized for operation over the full military temperature range of -55 C to 125C. The SN74F245 is characterized for operation from 0C to 70C. Features 2 of 3 l l 3-State Outputs Drive Bus Lines Directly Package Options Include Plastic Small-Outline (SOIC) and Shrink Small-Outline (SSOP) Packages, Ceramic Chip Carriers, and Plastic and Ceramic DIPs To view the following documents, Acrobat Reader 3.x is required. To download a document to your hard drive, right-click on the link and choose 'Save'. Datasheets Full datasheet in Acrobat PDF: sdfs010a.pdf (75 KB) Full datasheet in Zipped PostScript: sdfs010a.psz (75 KB) Pricing/Samples/Availability Orderable Device Package Pins Temp (C) Status Price/unit USD (100999) Pack Qty DSCC Number Availability / Samples FK 20 -55 TO 125 ACTIVE 5.85 1 Check stock or order JM38510/34803B2A FK 20 -55 TO 125 ACTIVE 6.53 1 Check stock or order JM38510/34803BRA J 20 -55 TO 125 ACTIVE 3.26 1 Check stock or order JM38510/34803BSA W 20 -55 TO 125 ACTIVE 9.34 1 Check stock or order SN54F245J J 20 -55 TO 125 ACTIVE 2.49 1 Check stock or order SNJ54F245FK FK 20 -55 TO 125 ACTIVE 5.85 1 85511012A Check stock or order SNJ54F245J J 20 -55 TO 125 ACTIVE 2.92 1 8551101RA Check stock or order SNJ54F245W W 20 -55 TO 125 ACTIVE 8.35 1 8551101SA Check stock or order 85511012A Application Reports View Application Reports for Digital Logic l l l l l BUS-INTERFACE DEVICES WITH OUTPUT-DAMPING RESISTORS OR REDUCED-DRIVE OUTPUTS (SCBA012A - Updated: 08/01/1997) DESIGNING WITH LOGIC (SDYA009C - Updated: 06/01/1997) INPUT AND OUTPUT CHARACTERISTICS OF DIGITAL INTEGRATED CIRCUITS (SDYA010 - Updated: 02/05/1999) LOGIC SOLUTIONS FOR IEEE STD 1284 (SCEA013 - Updated: 06/27/1999) LVT-TO-LVTH CONVERSION (SCEA010 - Updated: 02/05/1999) Related Documents 3 of 3 l l l DOCUMENTATION RULES (SAP) AND ORDERING INFORMATION (SZZU001B, 4 KB - Updated: 05/06/1999) LOGIC SELECTION GUIDE SECOND HALF 2000 (SDYU001N, 5035 KB - Updated: 04/17/2000) MORE POWER IN LESS SPACE - TECHNICAL ARTICLE (SCAU001A, 850 KB - Updated: 03/01/1996) Table Data Updated on: 8/8/2000 (c) Copyright 2000 Texas Instruments Incorporated. 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