The ST1G3234B is a dual supply low voltage CMOS 1-bit bus buffer level translator fabricated with sub-micron silicon gate and five-layer metal wiring C2MOS technology. Designed for use as an interface between a 3.3 V bus and a 2.5 V or 1.8 V bus in a mixed 3.3 V/1.8 V, 3.3 V/2.5 V, 1.8 V/1.4 V and 2.5 V/1.8 V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation. The ST1G3234B is intended for one-way asymmetric data transmission.
The ST1G3234B is a dual supply low voltage CMOS 1-bit bus buffer level translator designed for use as an interface between a 3.3 V bus and a 2.5 V or 1.8 V bus in mixed supply systems. It achieves high speed operation while maintaining low power dissipation and is intended for one-way asynchronous communication between data buses.
The device features power-down protection on inputs and outputs, allowing the buses to be effectively isolated when both power supplies are down. It includes input tolerant buffers that allow translation of signals compatible with the output voltage up to the input voltage, along with protection circuits against static discharge.
| Propagation delay (max) | 4.0 ns |
|---|---|
| Power dissipation (max) | 5 µA |
| Output impedance (min) | 10 MΩ |
| Operating voltage range | 1.4 to 3.6 V |
| Latch-up performance | > 500 mA |
| ESD performance (HBM) | > 2000 V |
| Max data rate (1.8 to 3.3 V) | 380 Mbps |
| Max data rate (<1.8 to 3.3 V) | 260 Mbps |
| Max data rate (to 2.5 V) | 260 Mbps |
| Max data rate (to 1.5 V) | 210 Mbps |
| Power dissipation (max) | 200 mW |
| Operating temperature | -40 to 85 °C |
The maximum data rate is 380 Mbps for translation between 1.8 V and 3.3 V.
Yes, it has power-down protection on inputs and outputs that disables the device when both power supplies are down.
The operating voltage range for both supply voltages is 1.4 to 3.6 V.