IDT74FCT245DTE datasheet, PDF - EEWORLD Datasheet

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IDT74FCT245DTE: DescriptionFCT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20; Categorysemiconductor logic; File Size101KB，8 Pages; ManufacturerIDT (Integrated Device Technology, Inc.); Websitehttp://www.idt.com/

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IDT74FCT245DTE Overview

FCT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20

IDT74FCT245DTE Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	20
Maximum operating temperature	85 Cel
Minimum operating temperature	-40 Cel
Maximum supply/operating voltage	5.25 V
Minimum supply/operating voltage	4.75 V
Rated supply voltage	5 V
Number of ports	2
Processing package description	SSOP-20
state	ACTIVE
Craftsmanship	CMOS
packaging shape	Rectangle
Package Size	SMALL OUTLINE, SHRINK PITCH
surface mount	Yes
Terminal form	GULL WING
Terminal spacing	0.6500 mm
terminal coating	tin lead
Terminal location	pair
Packaging Materials	Plastic/Epoxy
Temperature level	INDUSTRIAL
series	FCT
Output characteristics	3-ST WITH S-RES
Logic IC type	transceiver
Number of digits	8
Output polarity	TRUE
propagation delay TPD	4.6 ns

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FAST CMOS OCTAL

BIDIRECTIONAL

TRANSCEIVERS

Integrated Device Technology, Inc.

IDT54/74FCT245T/AT/CT/DT - 2245T/AT/CT

IDT54/74FCT640T/AT/CT

IDT54/74FCT645T/AT/CT/DT

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 FCT245T/FCT640T/FCT645T:

– Std., A, C and D speed grades

– High drive outputs (-15mA I

, 64mA I

)

• Features for FCT2245T:

– Std., A and C speed grades

– Resistor outputs (-15mA I

, 12mA I

Com.)

(-12mA I

, 12mA I

Mil.)

– Reduced system switching noise

DESCRIPTION:

The IDT octal bidirectional transceivers are built using an

advanced dual metal CMOS technology. The FCT245T/

FCT2245T, FCT640T and FCT645T are designed for asyn-

chronous two-way communication between data buses. The

transmit/receive (T/

) input determines the direction of data

flow through the bidirectional transceiver. Transmit (active

HIGH) enables data from A ports to B ports, and receive

(active LOW) from B ports to A ports. The output enable (

)

input, when HIGH, disables both A and B ports by placing

them in HIGH Z condition.

The FCT245T/FCT2245T and FCT645T transceivers have

non-inverting outputs. The FCT640T has inverting outputs.

The FCT2245T has balanced drive outputs with current

limiting resistors. This offers low ground bounce, minimal

undershoot and controlled output fall times- reducing the need

for external series terminating resistors. The FCT2xxxT parts

are plug-in replacements for FCTxxxT parts.

FUNCTIONAL BLOCK DIAGRAM

T/R

FCT245T/2245T, FCT645T are non-inverting options.

FCT640T is the inverting options.

2539 drw 01

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

PIN CONFIGURATIONS

T/R

GND

P20-1

D20-1

SO20-2

SO20-7*

SO20-8**

E20-1

Vcc

2539 drw 02

DIP/SOIC/SSOP/QSOP/CERPACK

TOP VIEW

*FCT245T/2245T, FCT645T only.

**FCT245T/2245T, FCT640T

INDEX

T/R

Vcc

20 19

9 10 11 12 13

L20-2

GND

2539 drw 03

LCC

TOP VIEW

MILITARY AND COMMERCIAL TEMPERATURE RANGES

Integrated Device Technology, Inc.

AUGUST 1995

DSC-4611/4

6.9

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