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
· Output Ports Have Equivalent 22-W Series
Resistors, So No External Resistors Are
Required
· Support Mixed-Mode Signal Operation (5-V
Input and Output Voltages With 3.3-V VCC)
· Support Unregulated Battery Operation Down
to 2.7 V
· Typical VOLP (Output Ground Bounce) <0.8 V
at VCC = 3.3 V, TA = 25°C
· Ioff and Power-Up 3-State Support Hot
Insertion
· Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
· Distributed VCC and GND Pin Configuration
Minimizes High-Speed Switching Noise
· Flow-Through Architecture Optimizes PCB
Layout
· Latch-Up Performance Exceeds 500 mA Per
JESD 17
· ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
· Package Options Include Plastic Shrink
Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages and 380-mil
Fine-Pitch Ceramic Flat (WD) Package Using
25-mil Center-to-Center Spacings

DESCRIPTION/ORDERING INFORMATION
These 16-bit buffers/drivers are designed specifically for low-voltage (3.3-V) VCC operation, but with the
capability to provide a TTL interface to a 5-V system environment.
These devices are noninverting 16-bit buffers composed of two 8-bit sections with separate output-enable
signals. For either 8-bit buffer section, the two output-enable (1OE1 and 1OE2 or 2OE1 and 2OE2) inputs must
be low for the corresponding Y outputs to be active. If either output-enable input is high, the outputs of that 8-bit
buffer section are in the high-impedance state.
The outputs, which are designed to source or sink up to 12 mA, include equivalent 22-W series resistors to
reduce overshoot and undershoot.
When VCC 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 VCC through a pullup resistor;
the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff 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.
The SN54LVTH162541 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74LVTH162541 is characterized for operation from –40°C to 85°C.