Integrated Device Technology Inc IDT74FCT646CTPY, IDT74FCT646CTPGB, IDT74FCT646CTPG, IDT74FCT646CTPB, IDT74FCT646CTP Datasheet

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Integrated Device Technology Inc IDT74FCT646CTPY, IDT74FCT646CTPGB, IDT74FCT646CTPG, IDT74FCT646CTPB, IDT74FCT646CTP, IDT74FCT646CTLB, IDT74FCT646ATSOB, IDT74FCT646ATSO, IDT74FCT646ATQB, IDT74FCT646ATQ, IDT74FCT646ATPYB, IDT74FCT646ATPY, IDT74FCT646ATPGB, IDT74FCT646ATPG, IDT74FCT646ATPB, IDT74FCT652DTPY, IDT74FCT652DTPGB, IDT74FCT652DTPG, IDT74FCT652DTP, IDT74FCT652DTLB, IDT74FCT652DTL, IDT74FCT652DTEB, IDT74FCT652DTE, IDT74FCT652DTDB, IDT74FCT652DTD, IDT74FCT652CTSOB, IDT74FCT652CTSO, IDT74FCT652CTQB, IDT74FCT652CTQ, IDT74FCT652CTPYB, IDT74FCT652CTPY, IDT74FCT652CTPGB, IDT74FCT652CTPG, IDT74FCT652CTPB, IDT74FCT652TSOB, IDT74FCT652TQB, IDT74FCT652TQ, IDT74FCT652TPYB, IDT74FCT652TPY, IDT74FCT652TPGB, IDT74FCT652TPG, IDT74FCT652TPB, IDT74FCT652TP, IDT74FCT652TLB, IDT74FCT652TL, IDT74FCT652TE, IDT74FCT652TDB, IDT74FCT652TD, IDT74FCT652DTSOB, IDT74FCT652DTSO, IDT74FCT652DTQB, IDT74FCT652DTQ, IDT74FCT652DTPYB, IDT74FCT648CTPG, IDT74FCT648CTPB, IDT74FCT648CTP, IDT74FCT648CTLB, IDT74FCT648CTL, IDT74FCT648CTEB, IDT74FCT648CTE, IDT74FCT648CTDB, IDT74FCT648CTD, IDT74FCT652ATQB, IDT74FCT652ATQ, IDT74FCT652ATPYB, IDT74FCT652ATPY, IDT74FCT652ATPGB, IDT74FCT652ATPG, IDT74FCT652ATPB, IDT74FCT652ATP, IDT74FCT652ATLB, IDT74FCT646TD, IDT74FCT646DTSOB, IDT74FCT646DTQB, IDT74FCT646DTQ, IDT74FCT646DTPYB, IDT74FCT646DTPY, IDT74FCT646DTPGB, IDT74FCT646DTPG, IDT74FCT646DTPB, IDT74FCT646DTP, IDT74FCT648TPYB, IDT74FCT648TPY, IDT74FCT648TPGB, IDT74FCT648TPG, IDT74FCT648TPB, IDT74FCT648TP, IDT74FCT648TLB, IDT74FCT648TL, IDT74FCT648TEB, IDT74FCT648TE, IDT74FCT652ATL, IDT74FCT652ATEB, IDT74FCT652ATE, IDT74FCT652ATDB, IDT74FCT652ATD, IDT74FCT648TSOB, IDT74FCT648TSO, IDT74FCT648TQB, IDT74FCT648TQ, IDT74FCT648TDB, IDT74FCT648TD, IDT74FCT648CTSOB, IDT74FCT648CTSO, IDT74FCT648CTQB, IDT74FCT648CTQ, IDT74FCT648CTPY, IDT74FCT648CTPGB, IDT74FCT648ATSOB, IDT74FCT648ATSO, IDT74FCT648ATQB, IDT74FCT648ATQ, IDT74FCT648ATPYB, IDT74FCT648ATPY, IDT74FCT648ATPGB, IDT74FCT648ATPG, IDT74FCT648ATPB, IDT74FCT648ATP, IDT74FCT646TPYB, IDT74FCT646TPY, IDT74FCT646TPGB, IDT74FCT646TPG, IDT74FCT646TPB, IDT74FCT646TLB, IDT74FCT646TL, IDT74FCT646TEB, IDT74FCT646TE, IDT74FCT646TDB, IDT74FCT648ATLB, IDT74FCT648ATL, IDT74FCT648ATEB, IDT74FCT648ATE, IDT74FCT648ATDB, IDT74FCT648ATD, IDT74FCT646TSOB, IDT74FCT646TSO, IDT74FCT646TQB, IDT74FCT646TQ, IDT74FCT652CTP, IDT74FCT652CTLB, IDT74FCT652CTL, IDT74FCT652CTEB, IDT74FCT652CTE, IDT74FCT652CTDB, IDT74FCT652CTD, IDT74FCT652ATSOB, IDT74FCT652ATSO, IDT74FCT646DTLB, IDT74FCT646DTL, IDT74FCT646DTEB, IDT74FCT646DTE, IDT74FCT646DTDB, IDT74FCT646DTD, IDT74FCT646CTSOB, IDT74FCT646CTSO, IDT74FCT646CTQ, IDT74FCT646CTPYB, IDT74FCT646ATP, IDT74FCT646ATLB, IDT74FCT646ATL, IDT74FCT646ATEB, IDT74FCT646ATE, IDT74FCT646ATDB, IDT74FCT646ATD, IDT74FCT646CTL, IDT74FCT646CTEB, IDT74FCT646CTE, IDT74FCT646CTDB, IDT74FCT646CTD, IDT74FCT2652TPG, IDT74FCT2652TPB, IDT74FCT2652TP, IDT74FCT2652TLB, IDT74FCT2652TL, IDT74FCT2652TEB, IDT74FCT2652TE, IDT74FCT2652TDB, IDT74FCT2652TD, IDT74FCT2652DTSOB, IDT74FCT2652DTL, IDT74FCT2652DTEB, IDT74FCT2652DTE, IDT74FCT2652DTD, IDT74FCT2652CTSOB, IDT74FCT2652CTSO, IDT74FCT2652CTQB, IDT74FCT2652CTQ, IDT74FCT2652CTPYB, IDT74FCT2652CTPY, IDT74FCT2652DTSO, IDT74FCT2652DTQB, IDT74FCT2652DTQ, IDT74FCT2652DTPYB, IDT74FCT2652DTPY, IDT74FCT2652DTPGB, IDT74FCT2652DTPG, IDT74FCT2652DTPB, IDT74FCT2652DTP, IDT74FCT2652DTLB, IDT74FCT2652TSOB, IDT74FCT2652TSO, IDT74FCT2652TQB, IDT74FCT2652TQ, IDT74FCT2652TPYB, IDT74FCT2652TPY, IDT74FCT2652TPGB, IDT74FCT2652CTDB, IDT74FCT2652CTD, IDT74FCT2652ATSOB, IDT74FCT2652ATSO, IDT74FCT2652ATQB, IDT74FCT2652ATQ, IDT74FCT2652ATPYB, IDT74FCT2652ATPY, IDT74FCT2648TLB, IDT74FCT2648TL, IDT74FCT2648TEB, IDT74FCT2648TE, IDT74FCT2648TDB, IDT74FCT2648TD, IDT74FCT2648CTSOB, IDT74FCT2648CTSO, IDT74FCT2648CTQB, IDT74FCT2652CTPGB, IDT74FCT2652CTPG, IDT74FCT2652CTPB, IDT74FCT2652CTP, IDT74FCT2652CTLB, IDT74FCT2652CTL, IDT74FCT2652CTEB, IDT74FCT2652CTE, IDT74FCT2648TSOB, IDT74FCT2648TSO, IDT74FCT2648TQB, IDT74FCT2648TQ, IDT74FCT2648TPYB, IDT74FCT2648TPY, IDT74FCT2648TPG, IDT74FCT2648TPB, IDT74FCT2648TP, IDT74FCT2652ATPGB, IDT74FCT2652ATPG, IDT74FCT2652ATPB, IDT74FCT2652ATP, IDT74FCT2652ATLB, IDT74FCT2652ATL, IDT74FCT2652ATEB, IDT74FCT2652ATE, IDT74FCT2652ATDB, IDT74FCT2652ATD, IDT74FCT2648CTE, IDT74FCT2648CTDB, IDT74FCT2648CTD, IDT74FCT2648ATSOB, IDT74FCT2648ATSO, IDT74FCT2648ATQB, IDT74FCT2648ATQ, IDT74FCT2648ATPYB, IDT74FCT2648ATPY, IDT74FCT2648ATPGB, IDT74FCT2646ATE, IDT74FCT2646ATDB, IDT74FCT2646ATD, IDT74FCT2646CTSO, IDT74FCT2646CTQB, IDT74FCT2646CTQ, IDT74FCT2646CTPYB, IDT74FCT2646CTPY, IDT74FCT2646CTPGB, IDT74FCT2646CTPG, IDT74FCT2646CTPB, IDT74FCT2646CTP, IDT74FCT2646CTLB, IDT74FCT2646DTPB, IDT74FCT2646DTP, IDT74FCT2646DTLB, IDT74FCT2646DTL, IDT74FCT2646DTEB, IDT74FCT2646DTE, IDT74FCT2646DTDB, IDT74FCT2646DTD, IDT74FCT2646CTSOB, IDT74FCT2646ATQ, IDT74FCT2646ATPYB, IDT74FCT2646ATPY, IDT74FCT2646ATPGB, IDT74FCT2646ATPG, IDT74FCT2646ATPB, IDT74FCT2646ATP, IDT74FCT2646ATLB, IDT74FCT2646ATL, IDT74FCT2646ATEB, IDT74FCT2646TSO, IDT74FCT2646TQB, IDT74FCT2646TQ, IDT74FCT2646TPYB, IDT74FCT2646TPY, IDT74FCT2646TPGB, IDT74FCT2646TPG, IDT74FCT2646TPB, IDT74FCT2646TP, IDT74FCT2646TLB, IDT74FCT2648CTQ, IDT74FCT2648CTPYB, IDT74FCT2648CTPY, IDT74FCT2648CTPGB, IDT74FCT2648CTPG, IDT74FCT2648CTPB, IDT74FCT2648CTP, IDT74FCT2648CTLB, IDT74FCT2648CTL, IDT74FCT2648CTEB, IDT74FCT2646CTL, IDT74FCT2646CTEB, IDT74FCT2646CTE, IDT74FCT2646CTDB, IDT74FCT2646CTD, IDT74FCT2646ATSOB, IDT74FCT2646ATSO, IDT74FCT2646ATQB, IDT74FCT2648ATPG, IDT74FCT2648ATPB, IDT74FCT2648ATP, IDT74FCT2648ATLB, IDT74FCT2648ATL, IDT74FCT2648ATEB, IDT74FCT2648ATE, IDT74FCT2648ATDB, IDT74FCT2648ATD, IDT74FCT2646TSOB, IDT74FCT2646TL, IDT74FCT2646TEB, IDT74FCT2646TE, IDT74FCT2646DTSOB, IDT74FCT2646DTSO, IDT74FCT2646DTQB, IDT74FCT2646DTQ, IDT74FCT2646DTPYB, IDT74FCT2646DTPGB, IDT74FCT2646DTPG Datasheet

Integrated Device Technology, Inc.

FAST CMOS OCTAL TRANSCEIVER/ REGISTERS (3-STATE)

IDT54/74FCT646T/AT/CT/DT - 2646T/AT/CT

IDT54/74FCT648T/AT/CT

IDT54/74FCT652T/AT/CT/DT - 2652T/AT/CT

FEATURES:

• Common features:

– Low input and output leakage ≤1µA (max.) – Extended commercial range of –40°C to +85°C – CMOS power levels – True TTL input and output compatibility

– V

OH = 3.3V (typ.)

– VOL = 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, TSSOP,

CERPACK and LCC packages

• Features for FCT646T/648T/652T:

– Std., A, C and D speed grades – High drive outputs (-15mA IOH, 64mA IOL) – Power off disable outputs permit “live insertion”

• Features for FCT2646T/2652T:

– Std., A, and C speed grades – Resistor outputs (-15mA IOH, 12mA IOL Com.)

(-12mA IOH, 12mA IOL Mil.)

– Reduced system switching noise

DESCRIPTION:

The FCT646T/FCT2646T/FCT648T/FCT652T/2652T consist of a bus transceiver with 3-state D-type flip-flops and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers.

The FCT652T/FCT2652T utilize GAB and

control the transceiver functions. The FCT646T/FCT2646T/ FCT648T utilize the enable control (G) and direction (DIR) pins to control the transceiver functions.

SAB and SBA control pins are provided to select either realtime or stored data transfer. The circuitry used for select control will eliminate the typical decoding glitch that occurs in a multiplexer during the transition between stored and realtime data. A LOW input level selects real-time data and a HIGH selects stored data.

Data on the A or B data bus, or both, can be stored in the internal D flip-flops by LOW-to-HIGH transitions at the appropriate clock pins (CPAB or CPBA), regardless of the select or enable control pins.

The FCT26xxT have 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. FCT2xxxT parts are plug-in replacements for FCTxxxT parts.

GBA

signals to

FUNCTIONAL BLOCK DIAGRAM

IDT54/74FCT646/2646/648

646/2646/652/2652

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

DIR

CPBA

SBA

CPAB

SAB

ONLY

1 OF 8 CHANNELS

A REG 1D

GBA

TO 7 OTHER CHANNELS

IDT54/74FCT652/2652

ONLY

GAB

B REG

646/2646/652/2652

ONLY

2634 drw 01

MILITARY AND COMMERCIAL TEMPERATURE RANGES SEPTEMBER 1996

1996 Integrated Device Technology, Inc. 6.20 DSC-2634/9

IDT54/74FCT646/2646/652/2652T/AT/CT/DT, 648T/AT/CT FAST CMOS OCTAL TRANSCEIVER/REGISTER MILITARY AND COMMERCIAL TEMPERATURE RANGES

PIN CONFIGURATIONS

CPAB

SAB

DIR

GND

CPAB

SAB

GAB

GND

2 3

P24-1

A A2 A3 A4 A5 A6 A

5 6 7 8 9 10

D24-1

SO24-2

SO24-7*

SO24-8

SO24-9*

E24-1

DIP/SOIC/SSOP/

QSOP/TSSOP/CERPACK

TOP VIEW

* FCT646/2646T/AT/CT/DT only

2 3

P24-1

A A2 A3 A4 A5 A6 A

5 6 7 8 9 10

D24-1

SO24-2

SO24-7*

SO24-8

E24-1

DIP/SOIC/SSOP/

QSOP/CERPACK

TOP VIEW

* FCT652/2652T/AT/CT/DT only

24 23 22 21 20 19 18 17 16

15 14 13

24 23 22 21 20 19 18 17 16

15 14 13

VCC1 CPBA SBA

B2 B3 B4 B5 B6

2634 drw 02

VCC1 CPBA SBA

GBA

B2 B3 B4 B5 B6

2634 drw 04

FCT646/FCT2646T

FCT648

FCT652/FCT2652T

INDEX

A1 A2

A A5

A1 A2

A A5

CPAB

L28-1

GND

LCC

CPAB

L28-1

GND

LCC

CPBA

SBA

262728

25 24 23 22 21 20 19

181716

CPBA

SBA

262728

25 24 23 22 21 20 19

181716

B B2 NC

B B4

2634 drw 03

GBA

B2 NC B

B4 B5

2634 drw 05

SAB

DIR

5 6

7 8

9 10 11

5 6

7 8

9 10 11

1213

GAB

1213

TOP VIEW

SAB

TOP VIEW

PIN DESCRIPTION

Pin Names Description

A1 - A

B1 - B

CPAB, CPBA Clock Pulse Inputs

SAB, SBA Output Data Source Select Inputs

DIR,

GAB,

GBA

6.20 2

Data Register A Inputs Data Register B Outputs

Data Register B Inputs Data Register A Outputs

Output Enable Inputs (646/648) Output Enable Inputs (652)

2634 tbl 01

IDT54/74FCT646/2646/652/2652T/AT/CT/DT, 648T/AT/CT FAST CMOS OCTAL TRANSCEIVER/REGISTER MILITARY AND COMMERCIAL TEMPERATURE RANGES

FUNCTION TABLE (646/648)

Inputs Data I/O

GGDIR CPAB CPBA SAB SBA A1 - A8 B1 - B8 FCT646T/FCT2646T FCT648T

XXH or L↑H or L↑X

L L L L

L H HXH or L

X X

H or LXX

X X

Input Input Isolation

Output Input Real-Time B Data to A Bus

Input Output Real-Time A Data to B Bus

(1)

Operation or Function

Store A and B Data

Stored B Data to A Bus

Stored A Data to B Bus

Isolation Store A and B Data

Real-Time B Data to A Bus Stored B Data to A Bus Real-Time A Data to B Bus Stored A Data to B Bus

2634 tbl 02

FUNCTION TABLE (652)

Inputs Data I/O Operation or Function

GAB

NOTES: 2634 tbl 03

1. The data output functions may be enabled or disabled by various signals at the GAB or GBA inputs. Data

2. Select control = L: clocks can occur simultaneously.

3.A in B Register.

4.B in A Register.

GBA

CPAB CPBA SAB SBA A1 - A8 B1 - B8 FCT652T/FCT2652T

GBA

HHH or L↑H or L↑X

X H

L L

L H H

H H

XLH or L

L H HXH or L

↑ ↑

↑

X X

H or L↑X

↑ ↑

H or LXX

X X

(2)

X XXX

X X

(2)

L H X X

Input Input Isolation

Store A and B Data

Input Input

(1)

Store A, Hold B Store A in Both Registers

Hold A, Store B Store B in Both Registers

Input Input

Unspecified

Output

Unspecified

Output

(1)

Output Input Real-Time B Data to A Bus

Stored B Data to A Bus

Input Output Real-Time A Data to B Bus

Stored A Data to B Bus

H L H or L H or L H H Output Output Stored A Data to B Bus and Stored B Data to A Bus

input functions are always enabled, i.e. data at the bus pins will be stored on every LOW-to-HIGH transition on the clock inputs.

Select control = H: clocks must be staggered in order to load both registers. H = HIGH, L = LOW, X = Don't Care, ≠ = LOW-to-HIGH transition.

6.20 3

+ 6 hidden pages

Integrated Device Technology Inc IDT74FCT646CTPY, IDT74FCT646CTPGB, IDT74FCT646CTPG, IDT74FCT646CTPB, IDT74FCT646CTP Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual