IDT74FCT623CTD datasheet, PDF - EEWORLD Datasheet

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IDT74FCT623CTD: DescriptionFAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE); File Size68KB，6 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/

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IDT74FCT623CTD Overview

FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)

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IDT54/74FCT623T/AT/CT

FAST CMOS OCTAL BUS TRANSCEIVERS (3-STATE)

FAST CMOS OCTAL

BUS TRANSCEIVERS

(3-STATE)

Integrated Device Technology, Inc.

IDT54/74FCT623T/AT/CT

FEATURES:

•

Std., A and C speed grades

Low input and output leakage

≤1µA

(max.)

CMOS power levels

True TTL input and output compatibility

– V

= 3.3V (typ.)

– V

= 0.3V (typ.)

High drive outputs (-15mA I

, 64mA I

)

Power off disable outputs permit “live insertion”

Meets or exceeds JEDEC standard 18 specifications

Product available in Radiation Tolerant and Radiation

Enhanced versions

Military product compliant to MIL-STD-883, Class B

and DESC listed (dual marked)

Available in DIP, SOIC, CERPACK and LCC packages

DESCRIPTION

The FCT623T/AT/CT is a non-inverting octal transceiver

with 3-state bus-driving outputs in both the send and receive

directions. The B bus outputs are capable of sinking 64mA and

sourcing up to 15mA, providing very good capacitive drive

characteristics.

These octal bus transceivers are designed for asynchro-

nous two-way communication between data buses. The control

function implementation allows for maximum flexibility in

timing.

One important feature of the FCT623T/AT/CT is the Power

Down Disable capability. When the GAB and

BA inputs are

conditioned to put the device in high-Z state, the I/O ports will

maintain high impedance during power supply ramps and

when V

= 0V. This is a desirable feature in back-plane

applications where it may be necessary to perform “live”

insertion and removal of cards for on-line maintenance. It is

also a benefit in systems with multiple redundancy where one

or more redundant cards may be powered-off.

•

FUNCTIONAL BLOCK DIAGRAM

GBA

GAB

A2 - A8

B2 - B8

7 other transceivers

2563 drw 01

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

MILITARY AND COMMERCIAL TEMPERATURE RANGES

Integrated Device Technology, Inc.

NOVEMBER 1995

DSC-2563/5

6.19

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Shortcut: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

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