Homedatasheet54ACT16861

54ACT16861 Datasheet

Bus Oriented Circuits
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Members of the Texas Instruments Widebus TM Family Inputs Are TTL-Voltage Compatible 3-State Outputs Drive Bus Lines Directly Flow-Through Architecture Optimizes PCB Layout Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise EPIC TM (Enhanced-Performance Implanted CMOS) 1-�m Process 500-mA Typical Latch-Up Immunity at 125�C Package Options Include Shrink Plastic Small-Outline 300-mil (DL) Packages Using 25-mil Center-to-Center Pin Spacings and 380-mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Pin Spacings

description

The 'ACT16861 are noninverting 20-bit transceivers designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements. The 'ACT16861 can be used as two 10-bit transceivers or one 20-bit transceiver. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the output-enable (OEAB or OEBA) inputs. The output-enable inputs can be used to disable the device so that the buses are effectively isolated.

The 74ACT16861 is packaged in TI's shrink small-outline package, which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area. The 54ACT16861 is characterized for operation over the full military temperature range to 125�C. The 74ACT16861 is characterized for operation from to 85�C.

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. EPIC and Widebus are trademarks of Texas Instruments Incorporated.

UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information 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

FUNCTION TABLE (each 10-bit section) INPUTS OEAB OEBA OPERATION Latch A and to A Isolation
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. 7 V Input voltage range, VI (see Note V to VCC 0.5 V Output voltage range, VO (see Note V to VCC 0.5 V Input clamp current, IIK (VI VI > VCC). �20 mA Output clamp current, IOK (VO VO > VCC). �50 mA Continuous output current, IO (VO 0 to VCC). �50 mA Continuous current through VCC or GND. �500 mA Maximum power package dissipation = 55�C (in still air) (see Note 2): DL package. 1.4 W Storage temperature range, Tstg. 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. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The maximum package power dissipation is calculated using a junction temperature of 150�C and a board trace length of 750 mils.

54ACT16861 MIN VCC VIH VIL VI VO IOH IOL t/v Supply voltage High-level input voltage Low-level input voltage Input voltage Output voltage High-level output current Low-level output current Input transition rise or fall rate VCC NOM 5 MAX 5.5 74ACT16861 MIN 2 0.8 VCC NOM 5 MAX 5.5 UNIT mA ns/V �C

TA Operating free-air temperature NOTE 3: Unused inputs must be held high or low to prevent them from floating.

PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice.


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