SN54BCT2240_15 Datasheet, PDF (1/11 Pages) Texas Instruments – OCTAL BUFFERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS

SN54BCT2240, SN74BCT2240
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS030E − SEPTEMBER 1988 − REVISED MARCH 2003
D Operating Voltage Range of 4.5 V to 5.5 V
D State-of-the-Art BiCMOS Design
Significantly Reduces I_CCZ
D Output Ports Have Equivalent 33-Ω Series
Resistors, So No External Resistors Are
Required
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
description/ordering information
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. Together with the SN74BCT2241
and the ’BCT2244 devices, 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 devices are 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.
SN54BCT2240 . . . J OR W PACKAGE
SN74BCT2240 . . . DB, DW, N,OR NS 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
To ensure the high-impedance state during power
up or power down, OE should be tied to V_CC
through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of
the driver.
The outputs, which are designed to source or sink up to 12 mA, include 33-Ω series resistors to reduce overshoot
and undershoot.
ORDERING INFORMATION
T_A
PACKAGE^†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube
SN74BCT2240N
SN74BCT2240N
0°C to 70°C
SOIC − DW
SOP − NS
Tube
Tape and reel
Tape and reel
SN74BCT2240DW
SN74BCT2240DWR
SN74BCT2240NSR
BCT2240
BCT2240
SSOP − DB
Tape and reel SN74BCT2240DBR
BA240
CDIP − J
−55°C to 125°C CFP − W
Tube
Tube
SNJ54BCT2240J
SNJ54BCT2240W
SNJ54BCT2240J
SNJ54BCT2240W
LCCC − FK
Tube
SNJ54BCT2240FK
SNJ54BCT2240FK
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are}
available at www.ti.com/sc/package.
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.
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.
Copyright © 2003, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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