Widebus and UBT are trademarks of Texas Instruments.
Texas Instruments74LVTH16501DLRG4The ’LVTH16501 devices are 18-bit universal bus transceivers designed for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.
Data flow in each direction is controlled by output-enable (OEAB and OE should be tied to VCC through a pullup resistor and OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sinking/current-sourcing capability of the driver.
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.
Feature
- Members of the Texas Instruments
Widebus Family - UBT Transceiver Combines D-Type
Latches and D-Type Flip-Flops for
Operation in Transparent, Latched, or
Clocked Mode - 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 Pins Minimize
High-Speed Switching Noise - Flow-Through Architecture Optimizes PCB Layout
- 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)
