ADG3308

Features:

Bidirectional Level Translation
Operates from 1.2 V to 5.5 V





Application

SPI^TM, Microwire^TM and I²CTM Translation
Low Voltage ASIC level Translation
Smart Card Readers
Cell Phones & Cell-Phone Cradles
Portable Communication Devices
Telecommunicatons Equipment
Network Switches and Routers
Storage Systems (SAN/NAS)
Computing/Server Applications
GPS
Portable POS Systems
Low Cost Serial Interfaces




Pinout








Specifications

V_CCY to GND . . . . . . . . . . . . . . . . . . . . . . . . .-0.3 V to +7 V
V_CCA to GND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +7 V
Digtal Inputs (A) . . . . . . . . . . . .. -0.3 V to (V_CCA +0.3V)
Digtal Inputs (Y) . . . . . . . . . . . . . . -0.3 V to (V_CCY +0.3V)
EN to GND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +7 V
Operating Temperature Range
Industrial (B Version) . . . . . . . . . . . . . . 40°C to +85°C
Storage Temperature Range . . . . . . . . . 65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . 150°C
20 Lead TSSOP
_JA Thermal Impedance . . . . . . . . . . . . . . . . .. . . 143°C/W
20 Lead LFCSP - 4 layer board
_JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 32°C/W
Lead Temperature, Soldering (10seconds) . . . . . . . 300°C
IR Reflow, Peak Temperature (<20 seconds) . . . +235°C






Description

The ADG3308 is an 8-Channel bidirectional level translator. Its function is to provide level shifting in a multivoltage system. The voltage applied to V_CCA sets up the logic levels on the A side of the device, while V_CCY sets the levels on the Y side. In this way, signals applied to the V_CCA side of the device appear as V_CCY compatible logic on the other side of the device and vice versa as ADG3308 is designed to handle bidirectional signals. The device is guaranteed for operation over the supply range 1.2 V to 5.5 V.

ADG3308 is suited to applications like data transfer between a low voltage DSP/Controller and a higher voltage device. Other applications include high end consumer products where constant changes to the chipset desgins result in multiple supply levels in the application. V_CCY operates from +1.65 to 5.5 V while V_CCA from +1.2 to V_CCY. V_CCA must always operate from a supply that is lower than V_CCY. When the device Enable pin (EN) is pulled low, the Ax and Yx inputs/outputs are tri-stated. The EN pin is driven high for normal operation. EN pin is referred to VCCY voltage.