SN54BCT2240 Datasheet, PDF (1/5 Pages) Texas Instruments – OCTAL BUFFERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS

• State-of-the-Art BiCMOS Design
Significantly Reduces I_CCZ
• Output Ports Have Equivalent 33-Ω Series
Resistors, So No External Resistors Are
Required
• 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
• Package Options Include Plastic
Small-Outline (DW) and Shrink
Small-Outline (DB) Packages, Ceramic Chip
Carriers (FK) and Flatpacks (W), and
Standard Plastic and Ceramic 300-mil DIPs
(J, N)
description
These octal buffers and line drivers are 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
SN74BCT2241 and ′BCT2244, 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. These devices
feature high fan-out and improved fan-in.
The ′BCT2240 is organized as two 4-bit 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, which are designed to source or sink
up to 12 mA, include 33-Ω series resistors to
reduce overshoot and undershoot.
The SN54BCT2240 is characterized for operation
over the full military temperature range of – 55°C
to 125°C. The SN74BCT2240 is characterized for
operation from 0°C to 70°C.
SN54BCT2240, SN74BCT2240
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS030D – SEPTEMBER 1988 – REVISED APRIL 1994
SN54BCT2240 . . . J OR W PACKAGE
SN74BCT2240 . . . DB, 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
SN54BCT2240 . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
1A2 4
18 1Y1
2Y3 5
17 _2A4
1A3 ⁶
16 _1Y2
2Y2 ⁷
15 _2A3
1A4 ⁸
14 _1Y3
9 10 11 12 13
FUNCTION TABLE
(each buffer)
INPUTS
OE
A
OUTPUT
Y
L
H
L
L
L
H
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1994, Texas Instruments Incorporated
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