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74VHCT540A Octal Buffer/Line Driver with 3-STATE Outputs
May 2007
74VHCT540A
Octal Buffer/Line Driver with 3-STATE Outputs
Features
■
High Speed: t
PD
=
5.4ns (Typ.) at V
CC
=
5V
■
Low Power Dissipation: I
CC
=
4µA (Max.) at T
A
=
25°C
■
Power down protection is provided on all inputs and
tm
General Description
The VHCT540A is an advanced high-speed CMOS
device fabricated with silicon gate CMOS technology. It
achieves the high-speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low
power dissipation.
The VHCT540A is an octal buffer/line driver designed to
be employed as memory and address drivers, clock
drivers and bus oriented transmitter/receivers.
This device is similar in function to the VHCT240A while
providing flow-through architecture (inputs on opposite
side from outputs). This pinout arrangement makes this
device especially useful as an output port for micro-
processors, allowing ease of layout and greater PC
board density.
Protection circuits ensure that 0V to 7V can be applied to
the input and output
(1)
pins without regard to the supply
voltage. This device can be used to interface 3V to 5V
systems and two supply systems such as battery
backup. This circuit prevents device destruction due to
mismatched supply and input voltages.
Note:
1. Outputs in OFF-State.
outputs
■
Pin and function compatible with 74HCT540
Ordering Information
Order Number
74VHCT540AM
74VHCT540ASJ
74VHCT540AMTC
Package
Number
M20B
M20D
MTC20
Package Dissipation
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153,
4.4mm Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the
ordering number. Pb-Free package per JEDEC J-STD-020B.
FPGA/CPLD
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