PCF8574APWRAlternatives & Equivalent Parts
About PCF8574APWR
PCF8574APWR is a interface-io-expanders component manufactured by Texas Instruments. It comes in a TSSOP-16 package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | PCF8574APWRSource | PCF8574PWR | MCP23008-E/SS | TCA9534APWR |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Microchip | Texas Instruments |
| Package Type | TSSOP-16 | TSSOP-16 | Small Outline Packages | Small Outline Packages |
| Pin Count | 16 | 16 | 20 | 16 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | — | -40.0°C ~ 85.0°C |
| Price | $0.3640 | $0.8539 | $1.1138 | $0.5550 |
| Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||
| Supply Voltage | 2.5 to 6 V | — | — | — |
| Interface | I2C | — | — | — |
| I/O Channels | 8 | — | — | — |
| Operating Temperature | -40 to +85 °C | — | — | — |
| I2C Speed | 400 kHz | — | — | — |
| Package | TSSOP-16 | — | — | — |
| Supply Current (standby) | 10 µA | — | — | — |
| Logic High Output Current (IOH) | 0.3 mA | — | — | — |
| supplyVoltageMin | — | 2.5 V | — | — |
| supplyVoltageMax | — | 6 V | — | — |
| interface | — | I2C | — | — |
| i2cSpeedMax | — | 400 kHz | — | — |
| numberOfIOs | — | 8 | — | — |
| addressPins | — | 3 | — | — |
| operatingTempMin | — | -40 °C | — | — |
| operatingTempMax | — | 85 °C | — | — |
| supplyCurrentStandby | — | 10 µA | — | — |
| Pbfree Code | — | — | Yes | Yes |
| Manufacturer Package Code | — | — | SSOP-20 | — |
| Factory Lead Time | — | — | 7 Weeks | — |
| YTEOL | — | — | 9 | 15 |
| Qualification Status | — | — | Not Qualified | — |
| uPs/uCs/Peripheral ICs Type | — | — | PARALLEL IO PORT, GENERAL PURPOSE | PARALLEL IO PORT, GENERAL PURPOSE |
| ## MCP23008-E/SS Alternates Showing results | — | — | Image | — |
| Address Bus Width | — | — | — | 8 |
| Clock Frequency-Max | — | — | — | 0.4 MHz |
| JESD-30 Code | — | — | — | R-PDSO-G16 |
| JESD-609 Code | — | — | — | e4 |
| Number of Bits | — | — | — | 8 |
| Number of I/O Lines | — | — | — | 8 |
| Number of Ports | — | — | — | 1 |
| Package Body Material | — | — | — | PLASTIC/EPOXY |
| Package Shape | — | — | — | RECTANGULAR |
| Package Style | — | — | — | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | — | — | — | 260 |
| Supply Current-Max | — | — | — | 0.04 mA |
| Supply Voltage-Max | — | — | — | 5.5 V |
| Supply Voltage-Min | — | — | — | 1.65 V |
| Supply Voltage-Nom | — | — | — | 1.8 V |
| Surface Mount | — | — | — | YES |
| Technology | — | — | — | CMOS |
| Temperature Grade | — | — | — | INDUSTRIAL |
| Terminal Finish | — | — | — | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | — | — | — | GULL WING |
| Terminal Pitch | — | — | — | 0.65 mm |
| Terminal Position | — | — | — | DUAL |
| Time@Peak Reflow Temperature-Max (s) | — | — | — | 30 |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Quick Links
Same die, same TSSOP-16 package and electrical specs; only I2C address range differs (0x20–0x27 vs 0x38–0x3F). Drop-in compatible after address reassignment.
8-bit I2C I/O expander with interrupt, 1.8–5.5V, SSOP-20. Functionally equivalent with additional interrupt control registers; minor firmware changes required.
8-bit low-voltage I2C/SMBus I/O expander, 1.65–5.5V, TSSOP-16. Pin and register compatible with PCF8574APWR, extended lower voltage support, same TI family.
Why Look for Alternatives?
Finding alternatives for PCF8574APWR is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating PCF8574APWR replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to PCF8574APWR?
Known equivalents for PCF8574APWR include PCF8574PWR, MCP23008-E/SS, TCA9534APWR. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of PCF8574APWR?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify PCF8574APWR alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.