© 2002 Fairchild Semiconductor Corporation DS500625 www.fairchildsemi.com
September 2001
Revised February 2002
7
4
AL
VCH16244
Low
V
o
l
t
ag
e 16-
Bit
Buf
f
er
/Li
n
e
Driv
er
w
i
th
Bushol
d
74ALVCH16244
Low Voltage 16-Bit Buffer/Line Driver with Bushold
General Description
The ALVCH16244 contains sixteen non-inverting buffers
with 3-STATE outputs to be employed as a memory and
address driver, clock driver, or bus oriented transmitter/
receiver. The device is nibble (4-bit) controlled. Each nibble
has separate 3-STATE control inputs which can be shorted
together for full 16-bit operation.
The ALVCH16244 data inputs include active bushold cir-
cuitry, eliminating the need for external pull-up resistors to
hold unused or floating data inputs at a valid logic level.
The 74ALVCH16244 is designed for low voltage (1.65V to
3.6V) V
CC
applications with output capability up to 3.6V.
The 74ALVCH16244 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
a73 1.65V to 3.6V V
CC
supply operation
a73 3.6V tolerant control inputs and outputs
a73 Bushold on data inputs eliminating the need for external
pull-up/pull-down resistors
a73 t
PD
3 ns max for 3.0V to 3.6V V
CC
3.7 ns max for 2.3V to 2.7V V
CC

6.0 ns max for 1.65V to 1.95V V
CC
a73 Uses patented noise/EMI reduction circuitry
a73 Latch-up conforms to JEDEC JED78
a73 ESD performance:
Human body model > 2000V
Machine model > 200V

Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol Pin Descriptions
Order Number
Package
Number
Package Description
74ALVCH16244T MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Pin Names Description
OE
n
Output Enable Input (Active LOW)
I
0
–I
15
Bushold Inputs
O
0
–O
15
Outputs