Overview
The ST4G3234BJR, produced by STMicroelectronics, is a 4-bit dual supply bus buffer level translator designed for use in mixed voltage supply systems. This IC is fabricated using sub-micron silicon gate and five-layer metal wiring C2MOS technology, ensuring high-speed operation while maintaining low power dissipation. It is intended for one-way asynchronous communication between data buses, particularly in systems requiring translation between 3.3V, 2.5V, and 1.8V supply voltages.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Supply Voltage (VCCA) | 1.4 to 3.6 V | V |
| Input Supply Voltage (VCCB) | 1.4 to 3.6 V | V |
| Propagation Delay (tPD) | 4.4 ns (MAX.) at TA=85°C | ns |
| Power Dissipation (ICCA, ICCB) | 5 µA (MAX.) at TA=85°C | µA |
| Output Current (IOHA, IOLA) | 10 mA MIN at VCCA = 3.0V; VCCB = 1.4 to 3.6V | mA |
| Max Data Rates | 380 Mbps (1.8V to 3.3V translation) | Mbps |
| ESD Performance | HBM > 2000V; MM > 200V | V |
| Package | 11-WFBGA, FCBGA | |
| Pin Count | 11 | |
| Terminal Pitch | 0.5 mm | mm |
Key Features
- High-speed operation with propagation delay of 4.4 ns (MAX.) at TA=85°C
- Low power dissipation with ICCA and ICCB of 5 µA (MAX.) at TA=85°C
- Symmetrical output impedance and balanced propagation delays
- Power down protection on inputs and outputs
- 26Ω series resistor on side outputs
- ESD protection with HBM > 2000V and MM > 200V
- Latch-up performance exceeds 500 mA (JESD 17)
- ROHS compliant for FLIPCHIP package
Applications
The ST4G3234BJR is designed for use in mixed voltage supply systems, particularly in applications requiring translation between different voltage levels such as:
- Mixed 3.3V/1.8V, 3.3V/2.5V, 1.8V/1.4V, and 2.5V/1.8V supply systems
- High-speed data communication interfaces
- Low power consumption systems
- Systems requiring ESD protection and latch-up immunity
Q & A
- What is the primary function of the ST4G3234BJR?
The ST4G3234BJR is a 4-bit dual supply bus buffer level translator designed for use in mixed voltage supply systems.
- What are the supported supply voltage ranges for VCCA and VCCB?
VCCA and VCCB can operate within the range of 1.4V to 3.6V.
- What is the maximum propagation delay of the ST4G3234BJR?
The maximum propagation delay is 4.4 ns at TA=85°C.
- What is the power dissipation of the ST4G3234BJR?
The power dissipation is 5 µA (MAX.) at TA=85°C for both ICCA and ICCB.
- Does the ST4G3234BJR have ESD protection?
- What is the maximum data rate supported by the ST4G3234BJR?
The maximum data rate is 380 Mbps for 1.8V to 3.3V translation.
- What type of package does the ST4G3234BJR come in?
The ST4G3234BJR comes in 11-WFBGA and FCBGA packages.
- How many pins does the ST4G3234BJR have?
The ST4G3234BJR has 11 pins.
- What is the terminal pitch of the ST4G3234BJR?
The terminal pitch is 0.5 mm.
- Is the ST4G3234BJR ROHS compliant?
