PI49FCT3807QEX

PI49FCT3807QEX is a device in the PI49FCT family of high‑speed CMOS bus interface parts. The exact function depends on the subfamily, but parts in this family are typically bus buffers/transceivers with 3‑state outputs and enable or direction control, intended to interface signals across voltage domains and boost bus performance. The “QEX” suffix denotes a specific package option.
Key points to verify in the datasheet:
- Supply voltage range and I/O voltage compatibility
- Number of I/O channels and whether it’s a transceiver or buffer
- Enable/directon control and timing (propagation delay, setup/hold)
- Power dissipation and package/dimensions
For an authoritative intro with exact pinout and electrical specs, consult the official PI49FCT3807QEX datasheet from the current manufacturer (Pericom/Diodes Inc or the current supplier). If you share the exact manufacturer, I can summarize the precise highlights.

Equivalents (8-bit FCT device) commonly referenced:
- TI SN74FCT3807
- Nexperia 74FCT3807
- STMicroelectronics 74FCT3807
- Renesas 74FCT3807 (where available)
- On Semiconductor 74FCT3807 (verify package/speed)
Note: cross-references depend on speed grade and package. Check exact packaging (SOIC/TSSOP) and RoHS/QFN options with your supplier.

Pin count: 20 pins (typical SOIC/TSSOP-20 package).
Function: 8-bit bidirectional bus transceiver/buffer with 3-state outputs (two 8-bit ports A and B). Data transfer direction is controlled by DIR, and an output-enable OE controls the 3-state outputs.

Manufacturer: Pericom Semiconductor Corporation (PI prefix in part numbers). Pericom is a semiconductor company that designs and markets high-speed interconnect, timing, and logic ICs (e.g., bus switches, clock buffers, PCIe/USB interconnects). It is now part of Renesas Electronics.

PI49FCT3807QEX is a high-speed, 8-bit bidirectional bus transceiver/buffer with tri-state outputs. Typical applications:
- Microprocessor/microcontroller data, address, and control bus buffering and isolation
- Memory interfaces and peripheral interconnects
- Backplane or inter-board bus buffering in embedded/computer systems
- Voltage-level translation between logic families (e.g., 5V ↔ 3.3V)
- System bus fan-out and signal integrity improvement
- Tri-state gated bus multiplexing to prevent contention
- Automotive and industrial embedded I/O requiring robust, high-speed performance

20‑pin SSOP (Small Outline) package; the QEX suffix denotes the specific SSOP variant. Check the datasheet for exact dimensions.