2.5 V/3.3 V, 8 Bit, 2 Port Level Translator, Bus Switch
The ADG3245 is a 2.5 V or 3.3 V, 8-bit, 2-port digital switch. It is designed on Analog Devices’ low voltage CMOS process, which provides low power dissipation yet gives high switching speed and very low on resistance, allowing inputs to be connected to outputs without additional propagation delay or generating additional ground bounce noise.
The switches are enabled by means of the bus enable (BE) input signal. These digital switches allow bidirectional signals to be switched when ON. In the OFF condition, signal levels up to the supplies are blocked.
This device is ideal for applications requiring level translation. When operated from a 3.3 V supply, level translation from 3.3 V inputs to 2.5 V outputs is allowed. Similarly, if the device is operated from a 2.5 V supply and 2.5 V inputs are applied, the device will translate the outputs to 1.8 V. In addition to this, a level translating select pin (SEL) is included. When SEL is low, VCC is reduced internally, allowing for level translation between 3.3 V inputs and 1.8 V outputs. This makes the device suited to applications requiring level translation between different supplies, such as converter to DSP/microcontroller interfacing.
- 3.3 V to 1.8 V voltage translation
- 3.3 V to 2.5 V voltage translation
- 2.5 V to 1.8 V voltage translation
- Bus switching
- Bus isolation
- Hot swap
- Hot plug
- Analog switch applications
- 3.3 V or 2.5 V supply operation
- Extremely low propagation delay through switch
- 4.5 Ω switches connect inputs to outputs
- Level/voltage translation
- 20-lead TSSOP and LFCSP (4 mm ¥ 4 mm) packages
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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.