SN54F245 TI | Alldatasheet

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SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A – MARCH 1987 – REVISED OCTOBER 1993 Copyright  1993, Texas Instruments Incorporated 2–1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

  • 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

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. 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 125°C. The SN74F245 is characterized for operation from 0°C to 70°C. FUNCTION TABLE INPUTS OPERATION OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation DIR GND VCC OE SN54F245 ...J PACKAGE SN74F245 . . . DB, DW, OR N PACKAGE (TOP VIEW) 3212 0 1 9 9 10 11 12 13 DIR B6 OE GND V CC SN54F245 . . . FK PACKAGE (TOP VIEW) 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.

SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A – MARCH 1987 – REVISED OCTOBER 1993 2–2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 logic symbol† logic diagram (positive logic) OE 3EN2[AB] 3EN1[BA] DIR DIR OE To Seven Other Channels † 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)‡ ‡ 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.

SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A – MARCH 1987 – REVISED OCTOBER 1993 2–3POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions SN54F245 SN74F245 UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V IIK Input clamp current –18 –18 mA IOH High level output current A1 thru A8 –3 –3 mAIOH High-level output current B1 thru B8 –1 2 –1 5 mA IOL Low level output current A1 thru A8 20 24 mAIOL Low-level output current B1 thru B8 48 64 mA TA Operating free-air temperature –55 125 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54F245 SN74F245 UNITPARAMETER TEST CONDITIONS MIN TYP † MAX MIN TYP † MAX UNIT VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V A1 thru A8 VCC =45V IOH = – 1 mA 2.5 3.4 2.5 3.4 A1 thru A8 VCC = 4.5 V IOH = – 3 mA 2.4 3.3 2.4 3.3 VOH B1 thru B8 VCC =45V IOH = – 12 mA 2 3.2 V B1 thru B8 VCC = 4.5 V IOH = – 15 mA 2 3.1 Any output VCC = 4.75 V, IOH = –1 mA to – 3 mA 2.7 A1 thru A8 VCC =45V IOL = 20 mA 0.3 0.5 VOL A1 thru A8 VCC = 4.5 V IOL = 24 mA 0.35 0.5 VVOL B1 thru B8 VCC =45V IOL = 48 mA 0.38 0.55 V B1 thru B8 VCC = 4.5 V IOL = 64 mA 0.42 0.55 II A and B VCC =55V VI = 5.5 V 1 1 mAII DIR, OE VCC = 5.5 V VI = 7 V 0.1 0.1 mA I ‡ A and B VCC =55V VI=27V 70 70 µAIIH‡ DIR, OE VCC = 5.5 V, VI = 2.7 V 20 20 µA I ‡ A and B VCC =55V VI=05V –0.65 –0.65 mAIIL‡ DIR, OE VCC = 5.5 V, VI = 0.5 V – 1.2 – 1.2 mA IOS § A1 thru A8 VCC =55V VO =0 –60 –150 –60 –150 mAIOS § B1 thru B8 VCC = 5.5 V, VO = 0 –100 –225 –100 –225 mA Outputs high 70 90 70 90 ICC VCC = 5.5 V Outputs low 95 120 95 120 mA Outputs disabled 85 110 85 110 † All typical values are at VCC = 5 V, TA = 25°C. ‡ 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.

SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A – MARCH 1987 – REVISED OCTOBER 1993 2–4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics (see Note 2) PARAMETER FROM (INPUT ) TO (OUTPUT ) VCC = 5 V, C L = 50 pF, R L = 500 Ω , TA = 25°C VCC = 4.5 V to 5.5 V, C L = 50 pF, R L = 500Ω , TA = MIN to MAX† UNIT(INPUT) (OUTPUT) ′F245 SN54F245 SN74F245 MIN TYP MAX MIN MAX MIN MAX tPLH Ao rB Bo rA ns tPHL A or B B or A ns tPZH OE Ao rB 2.2 4.9 7 1.7 9 2.2 8 ns tPZL OE A or B 2.7 5.6 8 2.2 10 2.7 9 ns tPHZ OE Ao rB ns tPLZ OE A or B ns † 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.

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) 85511012A ACTIVE LCCC FK 20 1 None Call TI Level-NC-NC-NC 8551101RA ACTIVE CDIP J 20 1 None Call TI Level-NC-NC-NC 8551101SA ACTIVE CFP W 20 1 None Call TI Level-NC-NC-NC JM38510/34803B2A ACTIVE LCCC FK 20 1 None Call TI Level-NC-NC-NC JM38510/34803BRA ACTIVE CDIP J 20 1 None Call TI Level-NC-NC-NC JM38510/34803BSA ACTIVE CFP W 20 1 None Call TI Level-NC-NC-NC SN54F245J ACTIVE CDIP J 20 1 None Call TI Level-NC-NC-NC SN74F245DBLE OBSOLETE SSOP DB 20 None Call TI Call TI SN74F245DBR ACTIVE SSOP DB 20 2000 Pb-Free (RoHS) CU NIPDAU Level-2-260C-1 YEAR/ Level-1-235C-UNLIM SN74F245DW ACTIVE SOIC DW 20 25 Pb-Free (RoHS) CU NIPDAU Level-2-250C-1 YEAR/ Level-1-235C-UNLIM SN74F245DWR ACTIVE SOIC DW 20 2000 Pb-Free (RoHS) CU NIPDAU Level-2-250C-1 YEAR/ Level-1-235C-UNLIM SN74F245N ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC SN74F245N3 OBSOLETE PDIP N 20 None Call TI Call TI SN74F245NSR ACTIVE SO NS 20 2000 Pb-Free (RoHS) CU NIPDAU Level-2-260C-1 YEAR/ Level-1-235C-UNLIM SNJ54F245FK ACTIVE LCCC FK 20 1 None Call TI Level-NC-NC-NC SNJ54F245J ACTIVE CDIP J 20 1 None Call TI Level-NC-NC-NC SNJ54F245W ACTIVE CFP W 20 1 None Call TI Level-NC-NC-NC (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)Eco Plan - May not be currently available - please checkhttp://www.ti.com/productcontentfor the latest availability information and additional product content details. None: Not yet available Lead (Pb-Free). Pb-Free (RoHS):TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br):TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens, including bromine (Br) or antimony (Sb) above 0.1% of total product weight. (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI PACKAGE OPTION ADDENDUM www.ti.com 28-Feb-2005 Addendum-Page 1

to Customer on an annual basis. PACKAGE OPTION ADDENDUM www.ti.com 28-Feb-2005 Addendum-Page 2

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