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Product Detailed Parameters
- Description：IC SWITCH SPDT 400MHZ 16-SOP
- Series：-
- Mfr：3PEAK
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：SPDT - Open/Closed
- Multiplexer/Demultiplexer Circuit：2:01
- On-State Resistance (Max)：8Ohm
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：2.3V ~ 3.6V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：5ns (Typ), 5ns (Typ)
- -3db Bandwidth：400MHz
- Charge Injection：-
- Channel Capacitance (CS(off), CD(off))：5pF
- Current - Leakage (IS(off)) (Max)：1µA
- Crosstalk：-
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOP
- Number of Circuits：4
- Grade：-
- Qualification：-
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Overview
The TPW3257-SO3R is a high-bandwidth bus switch manufactured by 3PEAK, utilizing an internal charge pump to generate higher voltage for the internal circuit than the input power voltage (VCC). This design provides low and flat on-state resistance and low switch I/O capacitance, allowing for minimal propagation delay. The device supports bidirectional data flow in a 2:1 configuration with up to four channels simultaneously. It operates within a supply voltage range of 2.3 V to 3.6 V and features 5-V tolerant I/Os. The component ensures isolation during power-off even when signals are present at the switch pins.
Feature Summary
- Utilizes an internal charge pump to provide low and flat on-state resistance across the operating voltage range.
- Provides device isolation during power-off, preventing current flow when powered down while signals remain at the ports.
- Supports 5-V tolerant I/Os, enabling switching pass ability for 0-V to 5-V signals with a 3.3 V supply.
- Features break-before-make switching logic to prevent signal contention during channel transitions.
Applications
- SPI routing
- Video signal routing
- Server systems
- Computer peripherals
Procurement Notes
Verify the specific package marking 'W3257' and the order suffix '-SO3R' corresponds to the SOP16 package variant. Confirm that the RoHS compliant and halogen-free status aligns with project requirements. Ensure the operating temperature range of -40°C to 125°C meets the environmental specifications of the target application before finalizing procurement.
Selection Notes
Select this component when a high-bandwidth solution exceeding 400 MHz is required for multiplexing or demultiplexing applications. The device is suitable for designs needing 5-V tolerant interfaces powered by a lower 3.3 V rail. Consider the SOP16 package dimensions and thermal characteristics if PCB space is constrained. Verify that the control logic levels for OE and S pins are compatible with the system's digital output drivers.
Part Context
The TPW3257 belongs to the 3PEAK family of high-speed bus switches designed for signal routing in digital systems. The '-SO3R' suffix specifically denotes the SOP16 surface-mount package configuration supplied in tape and reel format. This part serves as a bidirectional switch controlled by OE and S pins, distinct from unidirectional buffers or level shifters.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative bus switches based on matching bandwidth, supply voltage range, and package footprint compatibility.
