SN54LVTH16244A_09 Datasheet, PDF (1/21 Pages) Texas Instruments – 3.3-V ABT 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

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FEATURES
• Members of the Texas Instruments
Widebus™ Family
• State-of-the-Art Advanced BiCMOS
Technology (ABT) Design for 3.3-V
Operation and Low Static-Power
Dissipation
• 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
• Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
• Latch-Up Performance Exceeds 500 mA
Per JESD 17
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
SN54LVTH16244A, SN74LVTH16244A
3.3-V ABT 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS142T – MAY 1992 – REVISED NOVEMBER 2006
SN54LVTH16244A . . . WD PACKAGE
SN74LVTH16244A . . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
1OE ¹
1Y1 ²
1Y2 ³
GND ⁴
1Y3 ⁵
1Y4 ⁶
V_CC ⁷
2Y1 ⁸
2Y2 ⁹
GND ¹⁰
2Y3 ¹¹
2Y4 ¹²
3Y1 ¹³
3Y2 ¹⁴
GND ¹⁵
3Y3 ¹⁶
3Y4 ¹⁷
V_CC ¹⁸
4Y1 ¹⁹
4Y2 ²⁰
GND ²¹
4Y3 ²²
4Y4 ²³
4OE ²⁴
48 _2OE
47 _1A1
46 _1A2
45 _GND
44 _1A3
43 _1A4
42 _VCC
41 _2A1
40 _2A2
39 _GND
38 _2A3
37 _2A4
36 _3A1
35 _3A2
34 _GND
33 _3A3
32 _3A4
31 _VCC
30 _4A1
29 _4A2
28 _GND
27 _4A3
26 _4A4
25 _3OE
DESCRIPTION/ORDERING INFORMATION
The 'LVTH16244A 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.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown
resistors with the bus-hold circuitry is not recommended.
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1992–2006, Texas Instruments Incorporated