IDT IDT54FCT861A, IDT54FCT861B, IDT54FCT863A, IDT54FCT863B, IDT74FCT861A User Manual

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

Integrated Device Technology, Inc.

HIGH-PERFORMANCE
CMOS BUS
TRANSCEIVERS

IDT54/74FCT861A/B
IDT54/74FCT863A/B

FEATURES:

• Equivalent to AMD’s Am29861-64 bipolar registers in
pinout/function, speed and output drive over full tempera­ture and voltage supply extremes

• IDT54/74FCT861A/863A equivalent to FAST speed

• IDT54/74FCT861B/863B 25% faster than FAST

• High-speed symmetrical bidirectional transceivers

•IOL = 48mA (commercial) and 32mA (military)

• Clamp diodes on all inputs for ringing suppression

• CMOS power levels (1mW typ. static)

• TTL input and output level compatible

• CMOS output level compatible

• Substantially lower input current levels than AMD’s
bipolar Am29800 Series (5µA max.)

DESCRIPTION:

The IDT54/74FCT800 series is built using an advanced

dual metal CMOS technology.

The IDT54/74FCT860 series bus transceivers provide
high-performance bus interface buffering for wide
data/address paths or buses carrying parity. The
IDT54/74FCT863 9-bit transceivers have NAND-ed output
enables for maximum control flexibility.

All of the IDT54/74FCT800 high-performance interface
family are designed for high-capacitance load drive capability
while providing low-capacitance bus loading at both inputs
and outputs. All inputs have clamp diodes and all outputs are
designed for low-capacitance bus loading in the high- im­pedance state.

• Product available in Radiation Tolerant and Radiation
Enhanced versions

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

FUNCTIONAL BLOCK DIAGRAMS

IDT54/74FCT861 IDT54/74FCT863

T

0

T

1

9

-

OERT

T

0

T

1

8

-

OERT

OER

12

R

0

R

1

OETR9-

R

0

R

1

OETR8- OET

12

2610 drw 01

PRODUCT SELECTOR GUIDE

Device

10-Bit 9-Bit

Non-inverting IDT54/74FCT861 IDT54/74FCT863

The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FAST is a trademark of National Semiconductor Co.

MILITARY AND COMMERCIAL TEMPERATURE RANGES APRIL 1994

1994 Integrated Device Technology, Inc. 7.23 DSC-4620/3

1

IDT54/74FCT861A/B, IDT54/74FCT863A/B
HIGH-PERFORMANCE CMOS BUS TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES

PIN CONFIGURATIONS

IDT54/74FCT861 10-BIT TRANSCEIVERS

OER

R
R
R
R
R
R
R
R
R
R

GND

1
2

0

3

1
2
3
4
5
6
7
8
9

4
5
6
7
8
9
10
11
12

P24-1,
D24-1,

E24-1

SO24-2

24
23
22
21
20
19

&

18
17
16
15
14
13

DIP/CERPACK/SOIC

TOP VIEW

IDT54/74FCT863 9-BIT TRANSCEIVERS

OER

OER

GND

1

1

2

0

R

3

R

1

R

2

R

3
4

R
R

5

R

6

R

7

R

8
2

4
5
6
7
8
9
10
11
12

P24-1,
D24-1,

E24-1

SO24-2

24
23
22
21
20
19

&

18
17
16
15
14
13

Vcc

0

T
T

1

T

2

T

3

T

4

T

5

T

6

T

7

T

8

T

9

OET

Vcc
T
T
T
T
T
T
T
T
T

OET
OET

INDEX

R2
R3

R4

NC

R

5

R6
R7

1

R0R

OER

432128 27 26

5
6
7
8
9
10
11

L28-1

12 13 14 15 16 17 18

8

R

R9

GND

NC

NC

Vcc

OET

0

T1

T

25

2

T

24

T3

23

T4
NC

22
21

T5

20

T6

19

T7

9

T8T

LCC

TOP VIEW

INDEX

0
1
2
3
4
5
6
7
8

2
1

R2
R3

R4

NC

R
R6
R7

5

1

OER

R0R

432128 27 26

5
6
7
8
9
10
11

L28-1

12 13 14 15 16 17 18

8

2

R

GND

OER

NC

NC

Vcc

1

OET

0T1

T

2

OET

25

2

T

24

T3
T4

23

NC

22
21

T5
T6

20
19

T7

8

T

2610 drw 02

DIP/CERPACK/SOIC

LOGIC SYMBOLS

OET

10 10

OER

TOP VIEW

LCC

TOP VIEW

IDT54/74FCT863IDT54/74FCT861

OET1
OET2

TR

99

TR

OER1
OER2

7.23 2

2610 drw 03

IDT54/74FCT861A/B, IDT54/74FCT863A/B
HIGH-PERFORMANCE CMOS BUS TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES

PIN DESCRIPTION

Name I/O Description

IDT54/74FCT861

OER

OET

I I/O 10-bit RECEIVE input/output.

R

I I/O 10-bit TRANSMIT input/output.

T

IDT54/74FCT863

OER

OET

R

I I/O 9-bit RECEIVE input/output.

I I/O 9-bit TRANSMIT input/output.

T

I When LOW in conjunction with

activates the RECEIVE mode.

I When LOW in conjunction with

activates the TRANSMIT mode.

I I When LOW in conjunction with

activates the RECEIVE mode.

I I When LOW in conjunction with

activates the TRANSMIT mode.

OET

OER

OET

OER

HIGH

HIGH

I HIGH

I HIGH

2610 tbl 01

FUNCTION TABLE

(1)

IDT54/74FCT861/863 (Non-inverting)

Inputs Outputs

OET

OER

OET

OER

L H L N/A N/A L Transmitting
L H H N/A N/A H Transmitting
H L N/A L L N/A Receiving
H L N/A H H N/A Receiving
H H X X Z Z High Z

NOTE: 2610 tbl 02

1. H = HIGH, L = LOW, Z = High Impedance, X = Don’t Care, N/A = Not
Applicable.

I T I RI TI Function

R

ABSOLUTE MAXIMUM RATINGS

(1)

Symbol Rating Commercial Military Unit

(2)

V

TERM

Terminal Voltage –0.5 to +7.0 –0.5 to +7.0 V
with Respect
to GND

(3)

V

TERM

Terminal Voltage –0.5 to VCC –0.5 to VCC V
with Respect
to GND

T

A Operating 0 to +70 –55 to +125 °C

Temperature

T

BIAS Temperature –55 to +125 –65 to +135 °C

Under Bias

T

STG Storage –55 to +125 –65 to +150 °C

Temperature

P

T Power Dissipation 0.5 0.5 W

OUT DC Output Current 120 120 mA

I

NOTES: 2610 tbl 03

1. Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other
conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability. No terminal voltage
may exceed V

2. Inputs and V

3. Outputs and I/O terminals only.

CC by +0.5V unless otherwise noted.

CC terminals only.

CAPACITANCE (TA = +25°C, f = 1.0MHz)

Symbol Parameter

IN Input Capacitance V IN = 0V 6 10 pF

C

I/O I/O Capacitance VOUT = 0V 8 12 pF

C

NOTE: 2610 tbl 04

1. This parameter is guaranteed by characterization but not tested.

(1)

Conditions Typ. Max. Unit

7.23 3