Alternatives to NXP PCF8574AT
NXP PCF8574AT and its qualified second sources, compared on form, fit and function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
Equivalent and substitute parts for NXP PCF8574AT
 PCF8574ATNXP |  PCF8574ADWRTexas Instruments | PCF8574ADWTexas Instruments | +5more | |
|---|---|---|---|---|
| FFF Compatibility | Perfectly matches the SOIC-16 pinout mapping and pad assignments. Pin 8 is GND and Pin 16 is VCC.Matches the physical SOIC-16 wide package body (10.3 mm x 7.5 mm) and can be soldered directly on the same land pattern.Identical 8-bit quasi-bidirectional architecture, electrical parameters, and address range. | Matches the SOIC-16 pinout and assignments perfectly.Identical wide SOIC-16 body dimensions (10.3 mm x 7.5 mm).Identical quasi-bidirectional expander function, electrical ranges, and logic. | ||
 AI Summary | PCF8574AT by NXP: I/O Expander, 2.5V to 6V, 8bit, 40°C to 85°C, SOIC 16. | The PCF8574ADWR is an active, high-confidence drop-in replacement from Texas Instruments. It matches the original NXP part in footprint, pinout, address mapping, and quasi-bidirectional functionality without requiring any software or board redesign. This variant is supplied in Tape & Reel packaging.
| The PCF8574ADW is identical to the PCF8574ADWR but is supplied in Tubes instead of Tape & Reel. It offers an exact, risk-free drop-in replacement with identical electrical, physical, and address parameters, which is highly suitable for legacy designs.
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| Lifecycle Status | Obsolete | Active | Obsolete | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 PCF8574AT/3_518NXP | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 PCF8563TSUMW | Non-stock | Active | 3Alternatives availableSee Alternatives |
 PCF8523T/1,118NXP | In stock | Obsolete | 6Alternatives availableSee Alternatives |
 BC80740MTFonsemi | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
| PCA9517ADPNXP | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 MC74ACT20Donsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
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