SN74AUC16244
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES399D – JULY 2002 – REVISED JANUARY 2003
DGG OR DGV PACKAGE
(TOP VIEW)
Member of the Texas Instruments
Widebus Family
Optimized for 1.8-V Operation and Is 3.6-V
I/O Tolerant to Support Mixed-Mode Signal
Operation
1OE
1Y1
1Y2
GND
1Y3
1Y4
2OE
1
2
3
4
5
6
7
8
9
48
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
I
Supports Partial-Power-Down Mode
off
Operation
Sub 1-V Operable
V
42
V
Max t of 2 ns at 1.8 V
pd
CC
CC
2Y1
2Y2
41 2A1
40 2A2
39 GND
38 2A3
37 2A4
36 3A1
35 3A2
34 GND
33 3A3
32 3A4
Low Power Consumption, 20-µA Max I
±8-mA Output Drive at 1.8 V
CC
GND 10
2Y3 11
2Y4 12
3Y1 13
3Y2 14
GND 15
3Y3 16
3Y4 17
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
description/ordering information
V
18
31
V
CC
CC
4Y1 19
4Y2 20
GND 21
4Y3 22
4Y4 23
4OE 24
30 4A1
29 4A2
28 GND
27 4A3
26 4A4
25 3OE
This 16-bit buffer/driver is operational at 0.8-V to
2.7-V V , but is designed specifically for 1.65-V
CC
to 1.95-V V
operation.
CC
The SN74AUC16244 is designed specifically to
improve the performance and density of 3-state
memory address drivers, clock drivers, and
bus-oriented receivers and transmitters.
The device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. It provides true outputs and
symmetrical active-low output-enable (OE) inputs.
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup
CC
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Activebus-holdcircuitryholdsunusedorundriveninputsatavalidlogicstate. Useofpulluporpulldownresistors
with the bus-hold circuitry is not recommended.
This device is fully specified for partial-power-down applications using I . The I circuitry disables the outputs,
off
off
preventing damaging current backflow through the device when it is powered down.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
†
T
PACKAGE
TSSOP – DGG
A
MARKING
AUC16244
MH244
Tape and reel
Tape and reel
Tape and reel
SN74AUC16244DGGR
SN74AUC16244DGVR
SN74AUC16244GQLR
–40°C to 85°C TVSOP – DGV
VFBGA – GQL
MH244
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
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 2003, 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