SN74ALB16244
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCBS647D – AUGUST 1995 – REVISED JANUARY 2001
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Member of Texas Instruments’ Widebus
Family
State-of-the-Art Advanced Low-Voltage
BiCMOS (ALB) Technology Design for 3.3-V
Operation
1OE
1Y1
1Y2
GND
1Y3
1Y4
1
2
3
4
5
6
7
8
9
48 2OE
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
Schottky Diodes on All Inputs to Eliminate
Overshoot and Undershoot
Industry Standard ’16244 Pinout
V
42
V
Distributed V
High-Speed Switching Noise
and GND Pins Minimize
CC
CC
CC
2Y1
2Y2
41 2A1
40 2A2
39 GND
38 2A3
37 2A4
36 3A1
35 3A2
34 GND
33 3A3
32 3A4
Flow-Through Architecture Optimizes PCB
Layout
GND 10
2Y3 11
2Y4 12
3Y1 13
3Y2 14
GND 15
3Y3 16
3Y4 17
description
The SN74ALB16244 16-bit buffer and line driver
is designed for high-speed, low-voltage (3.3-V)
V
operation. This device is intended to replace
CC
the conventional driver in any speed-critical path.
The small propagation delay is achieved using a
unity-gain amplifier on the input and feedback
resistors from input to output, which allows the
output to track the input with a small offsetvoltage.
V
18
31
V
CC
CC
4Y1 19
4Y2 20
GND 21
4Y3 22
30 4A1
29 4A2
28 GND
27 4A3
The device can be used as four 4-bit buffers, two
8-bit buffers, or one 16-bit buffer. This device
provides true outputs and symmetrical active-low
output-enable (OE) inputs.
23
24
26
25
4Y4
4OE
4A4
3OE
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
Tube
SN74ALB16244DL
SSOP – DL
ALB16244
Tape and reel
SN74ALB16244DLR
SN74ALB16244DGGR
SN74ALB16244DGVR
–40°C to 85°C
TSSOP – DGG Tape and reel
TVSOP – DGV Tape and reel
ALB16244
AV244
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
Y
A
OE
L
H
L
H
L
L
H
X
Z
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Widebus is a trademark of Texas Instruments.
Copyright 2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265