www.ti.com
FEATURES
SN54LVT162244A. . . WD PACKAGE
SN74LVT162244A. . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OE
1Y1
1Y2
GND
1Y3
1Y4
VCC
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
VCC
4Y1
4Y2
GND
4Y3
4Y4
4OE
2OE
1A1
1A2
GND
1A3
1A4
VCC
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
VCC
4A1
4A2
GND
4A3
4A4
3OE
DESCRIPTION/ORDERING INFORMATION
SN54LVT162244A, SN74LVT162244A
3.3-V ABT 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS718C – JUNE 2000 – REVISED OCTOBER 2005
• Members of the Texas Instruments Widebus ™
Family
• Output Ports Have Equivalent 22- Ω Series
Resistors, So No External Resistors Are
Required
• Support Mixed-Mode Signal Operation (5-V
Input and Output Voltages With 3.3-V V CC )
• Support Unregulated Battery Operation Down
to 2.7 V
• Typical V OLP (Output Ground Bounce)
<0.8 V at V CC = 3.3 V, T A = 25 ° C
• I off and Power-Up 3-State Support Hot
Insertion
• Distributed V CC and GND Pins Minimize
High-Speed Switching Noise
• Flow-Through Architecture Optimizes PCB
Layout
• 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)
The 'LVT162244A devices are 16-bit buffers and line drivers designed for low-voltage (3.3-V) V CC operation, but
with the capability to provide a TTL interface to a 5-V system environment. These devices can be used as four
4-bit buffers, two 8-bit buffers, or one 16-bit buffer. These devices provide true outputs and symmetrical
active-low output-enable ( OE ) inputs.
The outputs, which are designed to source or sink up to 12 mA, include equivalent 22- Ω series resistors to
reduce overshoot and undershoot.
When V CC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 1.5 V, OE should be tied to V CC through a pullup resistor;
the minimum value of the resistor is determined by the current-sinking capability of the driver.
These devices are fully specified for hot-insertion applications using I off and power-up 3-state. The I off circuitry
disables the outputs, preventing damaging current backflow through the devices when they are powered down.
The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,
which prevents driver conflict.
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.
UNLESS OTHERWISE NOTED this document contains Copyright © 2000 – 2005, Texas Instruments Incorporated
PRODUCTION DATA information 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.