PCF8574TD vs PCF8574T Comparison
Detailed side-by-side comparison of PCF8574TD by NXP Semiconductors and PCF8574T by NXP Semiconductors. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
NXP Semiconductors
PCF8574TD - 8-bit I2C I/O Expander, SO-16 | NXP Semiconductors
PCF8574TD ✓ ActiveNXP Semiconductors
PCF8574T - 8-bit I2C I/O Expander, SOIC-16 | NXP Semiconductors
PCF8574T ObsoleteSpecification Comparison
| Parameter | PCF8574TD | PCF8574T |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | Obsolete |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.96 | $0.61 |
| Function | Remote 8-bit I/O expander for I2C-bus | — |
| Number of I/O | 8 (quasi-bidirectional) | — |
| Interface | I2C-bus (2-wire, up to 400 kHz) | — |
| Supply Voltage (VCC) | 2.5 V to 6 V | 2.5 V to 6 V |
| Standby Current | 10 uA maximum | [DATA_NEEDED: Istandby in uA] |
| I2C Address Range (PCF8574) | 0x20 to 0x27 (3 HW address bits) | — |
| Interrupt Output (INT) | Yes, open-drain, active-low | — |
| Maximum Bus Frequency | 400 kHz | — |
| Output Drive Capability | 25 mA sink per pin (quasi-bidirectional) | — |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Package | SO-16 (Small Outline, 16-pin) | SOIC-16 (T suffix) |
| Mounting Type | Surface Mount | — |
| Process Technology | Silicon CMOS | Silicon CMOS |
| RoHS Status | Compliant | Compliant |
| MSL Level | [DATA_NEEDED: MSL rating] | 1 (unlimited floor life) |
| ESD Rating | [DATA_NEEDED: ESD HBM rating] | — |
| Product Type | — | 8-bit I/O Expander |
| Bus Interface | — | I2C (Standard 100 kHz, Fast 400 kHz) |
| Number of I/O Pins | — | 8 (quasi-bidirectional, P0-P7) |
| I2C Address Bits | — | 3 (A0, A1, A2) |
| Base Address | — | 0x20 (PCF8574) / 0x38 (PCF8574A) |
| Addressable Devices per Bus | — | 8 (addresses 0x20-0x27) |
| Interrupt Output | — | Yes, open-drain INT pin |
| Output Current (drive LOW) | — | [DATA_NEEDED: sink current per pin mA] |