IDT74FCT645CTP datasheet, PDF - EEWORLD Datasheet

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IDT74FCT645CTP: DescriptionBus Transceiver, FCT Series, 1-Func, 8-Bit, True Output, CMOS, PDIP20, PLASTIC, DIP-20; Categorylogic logic; File Size157KB，8 Pages; ManufacturerIDT (Integrated Device Technology)

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IDT74FCT645CTP Overview

Bus Transceiver, FCT Series, 1-Func, 8-Bit, True Output, CMOS, PDIP20, PLASTIC, DIP-20

IDT74FCT645CTP Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Parts packaging code	DIP
package instruction	DIP, DIP20,.3
Contacts	20
Reach Compliance Code	not_compliant
Other features	WITH DIRECTION CONTROL
Control type	COMMON CONTROL
Counting direction	BIDIRECTIONAL
series	FCT
JESD-30 code	R-PDIP-T20
JESD-609 code	e0
length	26.162 mm
Load capacitance (CL)	50 pF
Logic integrated circuit type	BUS TRANSCEIVER
MaximumI(ol)	0.064 A
Number of digits	8
Number of functions	1
Number of ports	2
Number of terminals	20
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Output characteristics	3-STATE
Output polarity	TRUE
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Encapsulate equivalent code	DIP20,.3
Package shape	RECTANGULAR
Package form	IN-LINE
power supply	5 V
Prop。Delay @ Nom-Sup	4.1 ns
propagation delay (tpd)	4.1 ns
Certification status	Not Qualified
Maximum seat height	4.191 mm
Maximum supply voltage (Vsup)	5.25 V
Minimum supply voltage (Vsup)	4.75 V
Nominal supply voltage (Vsup)	5 V
surface mount	NO
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn85Pb15)
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
translate	N/A
width	7.62 mm
Base Number Matches	1

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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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