TL/F/12170
74LVT2244
3.3V
ABT
Octal
Buffer/Line
Driver
with
TRI-STATE
Outputs
ADVANCE INFORMATION
December 1996
74LVT2244
3.3V ABT Octal Buffer/Line Driver
with TRI-STATE Outputs
General Description
The LVT2244 is an octal buffer and line driver designed to
be employed as a memory address driver, clock driver and
bus oriented transmitter or receiver which provides im-
proved PC board density. The equivalent 25X-Series resis-
tor helps reduce output overshoot and undershoot.
These octal buffers and line drivers are designed for low-
voltage (3.3V) V
CC
applications, but with the capability to
provide a TTL interface to a 5V environment. The LVT2244
is fabricated with an advanced BiCMOS technology to
achieve high speed operation similar to 5V ABT while main-
taining a low power dissipation.
Features
Y
Input and output interface capability to systems at 5V
V
CC
Y
Bus-Hold data inputs eliminate the need for external
pull-up resistors to hold unused inputs
Y
Equivalent 25X-Series resistor on outputs
Y
Live insertion/extraction permitted
Y
Power Up/Down high impedance provides glitch-free
bus loading
Y
Outputs source/sink b12 mA/a12 mA
Y
Available in SOIC JEDEC, SOIC EIAJ, TSSOP and
SSOPII
Y
Latch-up performance exceeds 500 mA
Logic Symbol
IEEE/IEC
TL/F/12170–1
Connection Diagram
Pin Assignment
for SOIC, TSSOP and SSOPII
TL/F/12170–2
Truth Tables
Inputs Outputs
OE
1
I
n
(Pins 12, 14, 16, 18)
LL L
LH H
HX Z
Inputs Outputs
OE
2
I
n
(Pins 3, 5, 7, 9)
LL L
LH H
HX Z
HeHIGH Voltage Level L e LOW Voltage Level X e Immaterial Z e High Impedance
Pin Names Description
OE
1
,OE
2
TRI-STATE Output
Enable Inputs
I
0
–I
7
Inputs
O
0
–O
7
Outputs
SOIC JEDEC SOIC EIAJ TSSOP JEDEC SSOPII
Order 74LVT2244WM 74LVT2244SJ 74LVT2244MTC 74LVT2244MSA
Number 74LVT2244WMX 74LVT2244SJX 74LVT2244MTCX 74LVT2244MSAX
See NS M20B M20D MTC20 MSA20
Package
Number
TRI-STATE is a registered trademark of National Semiconductor Corporation.
C
1996 National Semiconductor Corporation RRD-B30M17/Printed in U. S. A. http://www.national.com