IDT74FCT543TQB datasheet, PDF - EEWORLD Datasheet

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IDT74FCT543TQB: DescriptionFAST CMOS OCTAL LATCHED TRANSCEIVER; File Size79KB，7 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/

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IDT74FCT543TQB Overview

FAST CMOS OCTAL LATCHED TRANSCEIVER

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FAST CMOS

OCTAL LATCHED

TRANSCEIVER

Integrated Device Technology, Inc.

IDT54/74FCT543T/AT/CT/DT

IDT54/74FCT2543T/AT/CT

FEATURES:

• Common features:

– Low input and output leakage

≤1µA

(max.)

– CMOS power levels

– True TTL input and output compatibility

– V

= 3.3V (typ.)

– V

= 0.3V (typ.)

– 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, SSOP, QSOP, CERPACK

and LCC packages

• Features for FCT543T:

– Std., A, C and D speed grades

– High drive outputs (-15mA I

, 64mA I

)

– Power off disable outputs permit “live insertion”

• Features for FCT2543T:

– Std., A, and C speed grades

– Resistor outputs (-15mA I

, 12mA I

Com.)

(-12mA I

, 12mA I

Mil.)

– Reduced system switching noise

DESCRIPTION:

The FCT543T/FCT2543T is a non-inverting octal trans-

ceiver built using an advanced dual metal CMOS technology.

This device contains two sets of eight D-type latches with

separate input and output controls for each set. For data flow

from A to B, for example, the A-to-B Enable (

CEAB

) input must

be LOW in order to enter data from A

–A

or to take data from

–B

, as indicated in the Function Table. With

CEAB

LOW,

a LOW signal on the A-to-B Latch Enable (

LEAB

) input makes

the A-to-B latches transparent; a subsequent LOW-to-HIGH

transition of the

LEAB

signal puts the A latches in the storage

mode and their outputs no longer change with the A inputs.

With

CEAB

and

OEAB

both LOW, the 3-state B output buffers

are active and reflect the data present at the output of the A

latches. Control of data from B to A is similar, but uses the

CEBA

LEBA

and

OEBA

inputs.

The FCT2543T has balanced output drive with current

limiting resistors. This offers low ground bounce, minimal

undershoot and controlled output fall times-reducing the need

for external series terminating resistors. FCT2xxxT parts are

plug-in replacements for FCTxxxT parts.

FUNCTIONAL BLOCK DIAGRAM

DETAIL A

DETAIL A x 7

OEBA

OEAB

CEBA

LEBA

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

CEAB

2613 drw 01

LEAB

MILITARY AND COMMERCIAL TEMPERATURE RANGES

Integrated Device Technology, Inc.

JANUARY 1995

DSC-4203/5

6.17

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