STMicroelectronics ST4G3234
The ST4G3234 is a dual supply low voltage CMOS 4-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 3.3V bus and a 2.5V or 1.8V bus in a mixed 3.3V/1.8V, 3.3V/2.5V, 1.8V/1.4V and 2.5V/1.8V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation. This IC is intended for one-way asynchronous communication between data buses.| Part No. | ST4G3234 |
|---|---|
| Datasheet | ST4G3234 Download |
| Manufacturer |  STMicroelectronics |
| Description | 4-BIT DUAL SUPPLY BUS BUFFER LEVEL TRANSLATOR |
| Buy | Stock & Price |
DESCRIPTION
The input and output power down protections disable the device when both power supply are down, so that the buses are effectively isolated. The input tolerant buffers allow to translate VCCB compatible signals and greater signals than VCCB up/down to VCCA. May 2005 Rev. 7 1/11 ST4G3234 Figure 2: Input And Output Equivalent Circuit Table 2: PinDESCRIPTION
PIN° A1 A3 A5 A7 C1 C3 C5 C7 B2 B6 B4 SYMBOL A4 A3 A2 A1 B4 B3 B2 B1 GND VCCA VCCB NAME AND FUNCTION Data Output Data Output Data Output Data Output Data Input Data Input Data Input Data Input Ground (0V) Positive Supply Voltage Positive Supply Voltage Figure 3: Pin Connection (top through view) 2/11 ST4G3234 Table 3: Truth Table INPUTS Bn (VCCB Referred) L H OUTPUTS Bn (VCCA Referred) L H Table 4:ABSOLUTE MAXIMUM RATINGS
Symbol VCCA VCCB VOA VIB VOA VIB IIK IOK IOA ICCA ICCB Pd Tstg TL Output Supply Voltage Input Supply Voltage DC Output Voltage (Power Down Mode: VCCA=VCCB=Gnd) DC Input Voltage (Power Down Mode: VCCA=VCC...
