Texas Instruments SN74ABT861DW, SN74ABT861DWR, SN74ABT861NT Datasheet
SN54ABT861, SN74ABT861
10-BIT TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS199C – FEBRUARY 1991 – REVISED MAY 1997
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
State-of-the-Art
EPIC-ΙΙB
BiCMOS Design
Significantly Reduces Power Dissipation
D
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D
High-Impedance State During Power Up
and Power Down
D
Latch-Up Performance Exceeds 500 mA Per
JEDEC Standard JESD-17
D
High-Drive Outputs (–32-mA IOH, 64-mA IOL)
D
Package Options Include Plastic
Small-Outline (DW) Package, Ceramic Chip
Carriers (FK), and Plastic (NT) and
Ceramic (JT) DIPs
description
The ’ABT861 are 10-bit transceivers designed for
asynchronous communication between data
buses. The control-function implementation
allows for maximum flexibility in timing.
These devices allow noninverted data
transmission from the A bus to the B bus or from
the B bus to the A bus, depending on the logic
levels at the output-enable (OEAB
and OEBA)
inputs.
When VCC is between 0 and 2.1 V, the device is
in the high-impedance state during power up or
power down. However, to ensure the
high-impedance state above 2.1 V , OE
should be
tied to VCC through a pullup resistor; the minimum
value of the resistor is determined by the
current-sinking capability of the driver.
The SN54ABT861 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74ABT861 is characterized for
operation from –40°C to 85°C.
Copyright 1997, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC-ΙΙB is a trademark of Texas Instruments Incorporated.
SN54ABT861 . . . JT PACKAGE
SN74ABT861 . . . DW OR NT PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
OEBA
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
GND
V
CC
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
OEAB
3212827
12 13
5
6
7
8
9
10
11
25
24
21
22
21
20
19
B3
B4
B5
NC
B6
B7
B8
A3
A4
A5
NC
A6
A7
A8
426
14 15 16 1718
A9
A10
GND
NC
OEAB
B10
B9
A2A1OEBANCB1
B2
SN54ABT861 . . . FK PACKAGE
(TOP VIEW)
V
CC
NC – No internal connection
SN54ABT861, SN74ABT861
10-BIT TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS199C – FEBRUARY 1991 – REVISED MAY 1997
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
FUNCTION TABLE
INPUTS
OEAB OEBA
OPERATION
L H A data to B bus
H L B data to A bus
H H Isolation
L L
Latch A and B
(A = B)
logic symbol
†
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the DW, JT, and NT packages.
EN1
1
2
A1
3
A2
B1
23
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
B2
22
B3
21
B5
19
B4
20
B6
18
B8
16
B7
17
OEBA
EN2
13
OEAB
10
A9
B9
15
11
A10
B10
14
1
1
1
2
logic diagram (positive logic)
A1 B1
OEBA
OEAB
To Nine Other Channels
1
13
223
Pin numbers shown are for the DW, JT, and NT packages.
SN54ABT861, SN74ABT861
10-BIT TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS199C – FEBRUARY 1991 – REVISED MAY 1997
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, V
CC
–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (except I/O ports) (see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high or power-off state, VO –0.5 V to 5.5 V. . . . . . . . . . . . . . . . . . .
Current into any output in the low state, IO: SN54ABT861 96 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ABT861 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(VI < 0) –18 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): DW package 81°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NT package 67°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51, except for through-hole packages,
which use a trace length of zero.
recommended operating conditions (see Note 3)
SN54ABT861 SN74ABT861
MIN MAX MIN MAX
UNIT
V
CC
Supply voltage 4.5 5.5 4.5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.8 0.8 V
V
I
Input voltage 0 V
CC
0 V
CC
V
I
OH
High-level output current –24 –32 mA
I
OL
Low-level output current 48 64 mA
∆t/∆v Input transition rise or fall rate Outputs enabled 5 5 ns/V
T
A
Operating free-air temperature –55 125 –40 85 °C
NOTE 3: Unused pins (input or I/O) must be held high or low to prevent them from floating.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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