Data Sheet
© 2005 Fairchild Semiconductor Corporation DS011639 www.fairchildsemi.com
August 1993
Revised May 2005
74VHC541 Octal Buffer/Line Driver with 3-STATE Outputs
74VHC541
Octal Buffer/Line Driver with 3-STATE Outputs
General Description
The VHC541 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 dissi-
pation.
The VHC541 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 VHC244 while pro-
viding flow-through architecture (inputs on opposite side
from outputs). This pinout arrangement makes this device
especially useful as an output port for microprocessors,
allowing ease of layout and greater PC board density.
An input protection circuit insures that 0V to 7V can be
applied to the input pins without regard to the supply volt-
age. This device can be used to interface 5V to 3V systems
and two supply systems such as battery backup. This cir-
cuit prevents device destruction due to mismatched supply
and input voltages.
Features
■ High Speed: t
PD
3.5 ns (typ) at V
CC
5V
■ Low power dissipation: I
CC
4 A (max) at T
A
25 C
■ High noise immunity: V
NIH
V
NIL
28% V
CC
(min)
■ Power down protection is provided on all inputs
■ Low noise: V
OLP
0.9V (typ)
■ Pin and function compatible with 74HC541
Ordering Code:
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Connection Diagram
Pin Descriptions
Logic Symbol
IEEE/IEC
Truth Table
H HIGH Voltage Level X Immaterial
L
LOW Voltage Level Z High Impedance
Order Number Package Number Package Description
74VHC541M M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74VHC541SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHC541MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74VHC541N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Pin Names Descriptions
OE
1
, OE
2
3-STATE Output Enable Inputs
I
0
- I
7
Inputs
O
0
- O
7
3-STATE Outputs
Inputs Outputs
OE
1
OE
2
I
LLHH
HXXZ
XHXZ
LLLL