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 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.

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 SN54LVTH16541 is characterized for operation over the full military temperature range of –55°C to 125°C.

The SN74LVTH16541 is characterized for operation from –40°C to 85°C.