PCF8574PW vs PCF8574PWR Comparison
Detailed side-by-side comparison of PCF8574PW by Texas Instruments and PCF8574PWR by Texas Instruments. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Texas Instruments
PCF8574PW - 8-bit I2C I/O Expander 20-TSSOP | Texas Instruments (Tape & Reel)
PCF8574PW ✓ ActiveTexas Instruments
PCF8574PWR - 8-bit I2C I/O Expander 20-TSSOP | Texas Instruments
PCF8574PWR ✓ ActiveSpecification Comparison
| Parameter | PCF8574PW | PCF8574PWR |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.77 | $0.77 |
| Function | I/O Expander | I/O Expander |
| Number of I/O | 8 | 8 |
| Interface | I2C (SMBus compatible) | I2C (SMBus compatible) |
| Clock Frequency (Max) | 100 kHz | 100 kHz |
| I2C Address Base | 0x20 (PCF8574A: 0x38) | 0x20 (PCF8574A: 0x38) |
| Supply Voltage (VCC) | 2.5 V to 6 V | 2.5 V to 6 V |
| Supply Current (Standby) | 2.5 uA typical | 2.5 uA typical |
| Interrupt Output | Yes (active-low INT) | Yes (active-low INT) |
| Hardware Address Pins | 3 (A0, A1, A2) | 3 (A0, A1, A2) |
| Max Devices on Bus | 8 (16 combined with PCF8574A) | 8 (16 combined with PCF8574A) |
| Output Drive (Source/Sink) | 25 mA / 25 mA per I/O | 25 mA / 25 mA per I/O |
| I/O Type | Quasi-bidirectional (no direction register) | Quasi-bidirectional (no direction register) |
| Package | 20-pin TSSOP (PW) | 20-pin TSSOP (PW) |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant | Compliant |
| MSL Level | 1 (unlimited floor life) | 1 (unlimited floor life) |