SN64BCT244 Datasheet, PDF (1/5 Pages) Texas Instruments – OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

• State-of-the-Art BiCMOS Design
Significantly Reduces I_CCZ
• 3-State Outputs Drive Bus Lines or
Buffer-Memory Address Registers
• P-N-P Inputs Reduce DC Loading
• High-Impedance State During Power Up
and Power Down
• Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic 300-mil DIPs (N)
description
SN64BCT244
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCBS027A – FEBRUARY 1989 – REVISED JANUARY 1994
DW OR N PACKAGE
(TOP VIEW)
1OE 1
1A1 2
2Y4 3
1A2 4
2Y3 5
1A3 6
2Y2 7
1A4 8
2Y1 9
GND 10
20 V_CC
19 2OE
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
This octal buffer and line driver is designed
specifically to improve both the performance and
density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. Taken
together with the SN64BCT240 and SN64BCT241, these devices provide the choice of selected combinations
of inverting and noninverting outputs, symmetrical active-low output-enable (OE) inputs, and complementary
OE and OE inputs.
The SN64BCT244 is organized as two 4-bit buffers/line drivers with separate output-enable (OE) inputs. When
OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the
high-impedance state.
The outputs are in a high-impedance state during power up and power down while the supply voltage is less
than approximately 3 V.
The SN64BCT244 is characterized for operation from – 40°C to 85°C.
FUNCTION TABLE
(each buffer)
INPUTS
OE
A
OUTPUT
Y
L
H
H
L
L
L
H
X
Z
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.
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Copyright © 1994, Texas Instruments Incorporated
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