Datasheet

SN54LVTH16244A, SN74LVTH16244A
www.ti.com SCBS142U –MAY 1992–REVISED OCTOBER 2013
3.3-V ABT 16-Bit Buffers/Drivers With 3-State Outputs
Check for Samples: SN54LVTH16244A, SN74LVTH16244A
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FEATURES
DESCRIPTION
The 'LVTH16244A devices are 16-bit buffers and line
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• Members of the Texas Instruments Widebus™
drivers designed for low-voltage (3.3-V) V
CC
Family
operation, but with the capability to provide a TTL
• State-of-the-Art Advanced BiCMOS
interface to a 5-V system environment. These devices
Technology (ABT) Design for 3.3-V
can be used as four 4-bit buffers, two 8-bit buffers, or
Operation and Low Static-Power
one 16-bit buffer. These devices provide true outputs
Dissipation
and symmetrical active-low output-enable (OE)
inputs.
• Support Mixed-Mode Signal Operation
(5-V Input and Output Voltages With
Active bus-hold circuitry holds unused or undriven
3.3-V V
CC
)
inputs at a valid logic state. Use of pullup or pulldown
resistors with the bus-hold circuitry is not
• Support Unregulated Battery Operation
recommended.
Down to 2.7 V
When V
CC
is between 0 and 1.5 V, the devices are in
• Typical V
OLP
(Output Ground Bounce)
the high-impedance state during power up or power
<0.8 V at V
CC
= 3.3 V, T
A
= 25°C
down. However, to ensure the high-impedance state
• I
off
and Power-Up 3-State Support Hot
above 1.5 V, OE should be tied to V
CC
through a
Insertion
pullup resistor; the minimum value of the resistor is
• Bus Hold on Data Inputs Eliminates the Need
determined by the current-sinking capability of the
for External Pullup/Pulldown Resistors
driver.
• Latch-Up Performance Exceeds 500 mA
These devices are fully specified for hot-insertion
Per JESD 17
applications using I
off
and power-up 3-state. The I
off
circuitry disables the outputs, preventing damaging
• ESD Protection Exceeds JESD 22
current backflow through the devices when they are
– 2000-V Human-Body Model (A114-A)
powered down. The power-up 3-state circuitry places
– 200-V Machine Model (A115-A)
the outputs in the high-impedance state during power
up and power down, which prevents driver conflict.
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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.
2Widebus is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 1992–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.