SN54LVTH16244A_14 Datasheet, PDF (1/23 Pages) Texas Instruments – 3.3-V ABT 16-Bit Buffers/Drivers With 3-State Outputs

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
FEATURES
1
•2 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)
DESCRIPTION
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.
1
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.
2
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 © 1992–2013, Texas Instruments Incorporated