OCTAL BUFFERS/DRIVERS
D Operating Voltage Range of 4.5 V to 5.5 V D State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
SN54BCT240 . . ...
Description
D Operating Voltage Range of 4.5 V to 5.5 V D State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
SN54BCT240 . . . J OR W PACKAGE SN74BCT240 . . . 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 VCC 19 2OE 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1
2Y1 GND 2A1 1Y4 2A2
SN54BCT240, SN74BCT240 OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS004F – OCTOBER 1987 – REVISED MARCH 2003
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
SN54BCT240 . . . FK PACKAGE (TOP VIEW)
2Y4 1A1 1OE VCC 2OE
1A2
3 2 1 20 19
4
18
1Y1
2Y3 5
17 2A4
1A3 6
16 1Y2
2Y2 7
15 2A3
1A4 8
14 1Y3
9 10 11 12 13
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 ’BCT241 and ’BCT244 devices, these devices provide the choice of selected combinations of inverting and noninverting outputs, symmetrical OE (active-low output-enable) inputs, and complementary OE and OE inputs. These devices feature high fan-out and improved fan-in.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDE...
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