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SNJ54BCT640FK

Part # SNJ54BCT640FK
Description Bus XCVR Single 8-CH 3-ST 20-Pin CLLCC Tube
Category IC
Availability In Stock
Qty 10
Qty Price
1 - 2 $18.36817
3 - 4 $14.61104
5 - 6 $13.77613
7 - 8 $12.80206
9 + $11.41053
Manufacturer Available Qty
Texas Instruments
Date Code: 9247
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

SN54BCT640, SN74BCT640
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS025C – SEPTEMBER 1988 – REVISED APRIL 1994
Copyright 1994, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
• State-of-the-Art BiCMOS Design
Substantially Reduces Standby Current
• Outputs Have Undershoot-Protection
Circuitry
• Power-Up High-Impedance State
• Buffered Control Inputs to Reduce DC
Loading Effects
• ESD Protection Exceeds 2000 V
Per MIL-STD-883C, Method 3015
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK) and Flatpacks (W), and
Plastic and Ceramic 300-mil DIPs (J, N)
description
The ′BCT640 bus transceiver is designed for
asynchronous communication between data
buses. These devices transmit data from the A
bus to the B bus or from the B bus to the A bus
depending upon the level at the direction-control
(DIR) input. The output-enable (OE
) input can be
used to disable the device so that the buses are
effectively isolated.
The SN54BCT640 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74BCT640 is characterized for
operation from 0°C to 70°C.
FUNCTION TABLE
INPUTS
OPERATION
OE DIR
OPERATION
L L B data to A bus
L HA data to B bus
H X Isolation
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
V
CC
OE
B1
B2
B3
B4
B5
B6
B7
B8
SN54BCT640 ...J OR W PACKAGE
SN74BCT640 . . . DW OR N PACKAGE
(TOP VIEW)
3212019
9
10 11 12 13
4
5
6
7
8
18
17
16
15
14
B1
B2
B3
B4
B5
A3
A4
A5
A6
A7
SN54BCT640 . . . FK PACKAGE
(TOP VIEW)
A2
A1
DIR
B7
B6 OE
A8
GND
B8
V
CC
PRODUCTION DATA information is 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.
SN54BCT640, SN74BCT640
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS025C – SEPTEMBER 1988 – REVISED APRIL 1994
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
logic diagram (positive logic)
1
2
A1 B1
3 EN1 [BA]
1
DIR
3 EN2 [AB]
2
A1
3
A2
B1
18
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
B2
17
B3
16
B5
14
B4
15
B6
13
B8
11
B7
12
OE
1
19
1
182
G3
19
OE
DIR
1
To Seven Other Channels
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
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: Control inputs (see Note 1) – 0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O ports (see Note 1) – 0.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the disabled or power-off state, V
O
– 0.5 V to 5.5 V. . . . . . . . . . . . . . .
Voltage range applied to any output in the high state, V
O
– 0.5 V to V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
–30 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state: SN54BCT640 96 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74BCT640 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range: SN54BCT640 – 55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74BCT640 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range – 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.
NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
SN54BCT640, SN74BCT640
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS025C – SEPTEMBER 1988 – REVISED APRIL 1994
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
SN54BCT640 SN74BCT640
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.8 0.8 V
I
IK
Input clamp current –18 –18 mA
I
OH
High level out
p
ut current
A port –3 –3
mA
I
OH
High
-
le
v
el
o
u
tp
u
t
c
u
rrent
B port –12 –15
mA
I
OL
Low level out
p
ut current
A port 20 24
mA
I
OL
Lo
w-
le
v
el
o
u
tp
u
t
c
u
rrent
B port 48 64
mA
T
A
Operating free-air temperature –55 125 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54BCT640 SN74BCT640
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP
†
MAX MIN TYP
†
MAX
UNIT
V
IK
V
CC
= 4.5 V, I
I
= –18 mA –1.2 –1.2 V
p
V
CC
=45V
I
OH
= –1 mA 2.5 3.4 2.5 3.4
V
CC
=
4
.
5
V
I
OH
= –3 mA 2.4 3.3 2.4 3.3
V
OH
I
OH
= –3 mA 2.4 3.3 2.4 3.3
V
B port V
CC
= 4.5 V
I
OH
= –12 mA 2 3.2
I
OH
= –15 mA 2 3.1
p
V
CC
=45V
I
OL
= 20 mA 0.3 0.5
V
OL
V
CC
=
4
.
5
V
I
OL
= 24 mA 0.35 0.5
V
V
OL
p
V
CC
=45V
I
OL
= 48 mA 0.38 0.55
V
V
CC
=
4
.
5
V
I
OL
= 64 mA 0.42 0.55
I
A or B port
V
CC
=55V
V
I
=55V
1 1
mA
I
I
Control inputs
V
CC
=
5
.
5
V
,
V
I
=
5
.
5
V
0.1 0.1
mA
I
‡
A or B port
V
CC
=55V
V
I
=27V
70 70
µA
I
IH
‡
Control inputs
V
CC
=
5
.
5
V
,
V
I
=
2
.
7
V
20 20
µ
A
I
‡
A or B port
V
CC
=55V
V
I
=05V
–0.6 –0.6
mA
I
IL
‡
Control inputs
V
CC
=
5
.
5
V
,
V
I
=
0
.
5
V
–0.65 –0.65
mA
I
§
A port
V
CC
=55V
V
O
=0
–60 –150 –60 –150
mA
I
OS
§
B port
V
CC
=
5
.
5
V
,
V
O
=
0
–100 –225 –100 –225
mA
I
CCL
A to B V
CC
= 5.5 V 53 84 53 94 mA
I
CCH
A to B V
CC
= 5.5 V 23 37 23 41 mA
I
CCZ
V
CC
= 5.5 V 4 10 4 11 mA
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
For I/O ports, the parameters I
IH
and I
IL
include the off-state output current.
§
Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
1234NEXT
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