PCA9500PW vs PCF8574PW Comparison
Detailed side-by-side comparison of PCA9500PW by NXP Semiconductors and PCF8574PW 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 ✓ ActiveSpecification Comparison
| Parameter | PCA9500PW | PCF8574PW |
|---|---|---|
| Brand | NXP Semiconductors | Texas Instruments |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | Active |
| Product Type | 8-bit I2C-bus and SMBus I/O port expander with EEPROM | — |
| Number of I/O Pins | 8 pins | — |
| I/O Direction Control | Independent input or output configuration per pin | — |
| I/O Port Type | Quasi-bidirectional | — |
| Integrated EEPROM Capacity | 2 kbit | — |
| Bus Interface | I2C-bus and SMBus | — |
| Maximum Bus Frequency | 400 kHz | — |
| Supply Voltage Range | 2.5 V to 3.6 V | — |
| Operating Temperature Range | -40 °C to +85 °C | — |
| Hardware Address Inputs | 3 address pins | — |
| Maximum Devices on One Bus | 8 devices | — |
| Package | 16-pin TSSOP | 20-pin TSSOP (PW) |
| Mounting Type | Surface mount | Surface Mount |
| GPIO and EEPROM Addressing | Two separate devices visible to the bus master | — |
| Reference Interface | PCF8574-compatible configuration method | — |
| RoHS Compliance | [DATA_NEEDED: verified RoHS status] | — |
| REACH Compliance | [DATA_NEEDED: verified REACH status] | — |
| Automotive Qualification | [DATA_NEEDED: AEC-Q100 qualification status] | — |
| Function | — | I/O Expander |
| Number of I/O | — | 8 |
| Interface | — | I2C (SMBus compatible) |
| Clock Frequency (Max) | — | 100 kHz |
| I2C Address Base | — | 0x20 (PCF8574A: 0x38) |
| Supply Voltage (VCC) | — | 2.5 V to 6 V |
| Supply Current (Standby) | — | 2.5 uA typical |
| Interrupt Output | — | Yes (active-low INT) |
| Hardware Address Pins | — | 3 (A0, A1, A2) |
| Max Devices on Bus | — | 8 (16 combined with PCF8574A) |
| Output Drive (Source/Sink) | — | 25 mA / 25 mA per I/O |
| I/O Type | — | Quasi-bidirectional (no direction register) |
| Operating Temperature | — | -40 C to +85 C |
| RoHS Status | — | Compliant |
| MSL Level | — | 1 (unlimited floor life) |