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LIMCHIP CO., LIMITED
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PCA9555AHF,128
Brand: NXP Semiconductors
The PCA9555AHF,128 is a 16-bit I²C GPIO expander with built-in weak pull-ups and 25 mA per-pin sink capability, driving LEDs and relays directly without external transistors. Operating down to 1.65 V with 5 V tolerant I/O, it fits low-voltage embedded designs that still need to interface with 5 V logic signals.
Stock & Date Code
| Brand | Part Number | Qty | D/C | Note |
|---|---|---|---|---|
| NXP | PCA9555AHF,128 | 6,000 | 26+ | NXP Semiconductors PCA9555AHF,128 16-bit I2C GPIO expander with weak pull-ups and 25mA sink; confirm date code, lot and packing condition by RFQ. |
Listed stock and date code are subject to final RFQ confirmation.
Interface IC Specifications
| Parameter | Value / Specification |
|---|---|
| Protocol / Function | 16-bit I²C-bus GPIO ander with interrupt output and weak pull-ups |
| Channels | 16 I/O ports |
| Data Rate | Fast-mode I²C, 400 kHz |
| Supply Voltage | VDD 1.65 V to 5.5 V |
| Package / Case | 24-HWQFN (SOT994-1), 4×4×0.75 mm |
| Interrupt Output | Open-drain INT output flags any input change without host polling |
| Operating Temperature | -40°C to +85°C |
| I/O Capability | 25 mA sink capability per pin and 5 V tolerant I/O |
Interface Features & Applications
- 25 mA per-pin sink capability drives LEDs and relays directly without external transistors
- Built-in weak pull-ups simplify designs that don't need external pull-up resistors
- VDD down to 1.65 V supports modern low-voltage microcontroller I2C rails
- 5 V tolerant I/O lets a low-voltage device interface with 5 V logic signals
- Open-drain INT output flags any input change, avoiding constant host polling
- 24-pin HWQFN package minimizes footprint versus larger GPIO expander packages
Need Price & Availability for PCA9555AHF,128?
LimChip can confirm current price, date code, packing condition, lot traceability and shipment schedule for PCA9555AHF,128.
Listed stock is subject to final RFQ confirmation.
For faster RFQ confirmation, please include:
- Required quantity
- Target date code
- Package / case requirement
- Delivery country
- Company name and contact person
- Target price if available
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Quality, Shipping & Payment
Commercial and shipment details for PCA9555AHF,128 are confirmed with the formal quotation.
Shipping
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Payment
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Frequently Asked Questions
Is PCA9555AHF,128 available from LimChip?
LimChip can confirm current availability, price, quantity, date code and lead time for PCA9555AHF,128 by RFQ.
What should buyers check before ordering PCA9555AHF,128?
Buyers should check interface standard, package, isolation, temperature grade and exact suffix for PCA9555AHF,128, together with live stock and traceable supply.
How do I request a quote for PCA9555AHF,128?
Use the RFQ button and include required quantity, target date code, package/case requirement, delivery country, company name and contact details.