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SN54BCT126A Datasheet Preview

SN54BCT126A Datasheet

QUADRUPLE BUS BUFFER GATES

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State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
ESD Protection Exceeds 2000 V Per
MIL-STD-883C, Method 3015
3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK) and Flatpacks (W), and
Standard Plastic and Ceramic 300-mil
DIPs (J, N)
description
The BCT126A bus buffer features independent
line drivers with 3-state outputs. Each output is
disabled when the associated output-enable (OE)
input is low.
The SN54BCT126A is characterized for operation
over the full military temperature range of – 55°C
to 125°C. The SN74BCT126A is characterized for
operation from 0°C to 70°C.
FUNCTION TABLE
(each buffer)
INPUTS
OE
A
OUTPUT
Y
H
H
H
H
L
L
L
X
Z
SN54BCT126A, SN74BCT126A
QUADRUPLE BUS BUFFER GATES
WITH 3-STATE OUTPUTS
SCBS252A – SEPTEMBER 1988 – REVISED APRIL 1994
SN54BCT126A . . . J OR W PACKAGE
SN74BCT126A . . . D OR N PACKAGE
(TOP VIEW)
1OE 1
1A 2
1Y 3
2OE 4
2A 5
2Y 6
GND 7
14 VCC
13 4OE
12 4A
11 4Y
10 3OE
9 3A
8 3Y
SN54BCT126A . . . FK PACKAGE
(TOP VIEW)
1Y
NC
2OE
NC
2A
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
4A
NC
4Y
NC
3OE
NC – No internal connection
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.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1994, Texas Instruments Incorporated
2–1




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SN54BCT126A Datasheet Preview

SN54BCT126A Datasheet

QUADRUPLE BUS BUFFER GATES

No Preview Available !

SN54BCT126A, SN74BCT126A
QUADRUPLE BUS BUFFER GATES
WITH 3-STATE OUTPUTS
SCBS252A – SEPTEMBER 1988 – REVISED APRIL 1994
logic symbol
1
1OE
2
1A
4
2OE
5
2A
10
3OE
9
3A
13
4OE
12
4A
EN 1
3
1Y
6
2Y
8
3Y
11
4Y
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram (positive logic)
1
1OE
1A 2
4
2OE
5
2A
10
3OE
9
3A
3
1Y
6
2Y
8
3Y
13
4OE
12
4A
11
4Y
Pin numbers shown are for the J, N, and W packages.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 7 V
Voltage range applied to any output in the disabled or power-off state, VO . . . . . . . . . . . . . . . – 0.5 V to 5.5 V
Voltage range applied to any output in the high state, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to VCC
Current into any output in the low state: SN54BCT126A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
SN74BCT126A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Operating free-air temperature range: SN54BCT126A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN74BCT126A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
recommended operating conditions
VCC
VIH
VIL
IIK
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
Operating free-air temperature
SN54BCT126A
MIN NOM MAX
4.5
5 5.5
2
0.8
–18
– 12
48
– 55
125
SN74BCT126A
MIN NOM MAX
4.5
5 5.5
2
0.8
–18
– 15
64
0
70
UNIT
V
V
V
mA
mA
mA
°C
2–2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN54BCT126A
Description QUADRUPLE BUS BUFFER GATES
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