ADG3308:  Low Voltage, 1.15 V to 5.5 V, 8-Channel Bidirectional Logic Level Translator

The ADG3308/ADG3308-1/ADG3308-2 are bidirectional level translators containing eight bidirectional channels. They can be used in multivoltage digital system applications, such as a data transfer between a low voltage DSP controller and a higher voltage device. The internal architecture allows the device to perform bidirectional level translation without an additional signal to set the direction in which the translation takes place.

The voltage applied to V_CCA sets the logic levels on the A side of the device, and V_CCY sets the levels on the Y side. For proper operation, V_CCA must always be less than _CCY. The _CCA compatible logic signals applied to the A side of the device appear as V_CCY compatible levels on the Y side. Similarly, V_CCY compatible logic levels applied to the Y side of the device appear as V_CCA compatible logic levels on the A side.

The enable pin (EN) provides three-state operation on both the A side and the Y side pins. When the EN pin is pulled low, the terminals on both sides of the device are in the high impedance state. For normal operation, EN should be driven high.

The ADG3308 is available in a compact 20-lead TSSOP and a 20-lead LFCSP, the ADG3308-1 is available in a 20-ball WLCSP, and the ADG3308-2 is available in a backside-coated 20-ball WLCSP. The EN pin is referred to the V_CCY supply voltage for the ADG3308 and to the V_CCA supply voltage for the ADG3308-1 and ADG3308-2.

The ADG3308/ADG3308-1/ADG3308-2 are guaranteed to operate over the 1.15 V to 5.5 V supply voltage range and the extended −40°C to +85°C temperature range.

Product Highlights

• Bidirectional logic level translation.
• Fully guaranteed over the 1.15 V to 5.5 V supply range.
• No direction pin.
• Packages: 20-lead TSSOP and 20-lead LFCSP (ADG3308), 20-ball WLCSP (ADG3308-1), and backside-coated 20-ball WLCSP (ADG3308-2).

• Low voltage ASIC level translation
• Smart card readers
• Cell phones and cell phone cradles
• Portable communication devices
• Telecommunications equipment
• Network switches and routers
• Storage systems (SAN/NAS)
• Computing/server applications
• GPS
• Portable POS systems
• Low cost serial interfaces