PCF8574T vs PCF8574TD Comparison
Detailed side-by-side comparison of PCF8574T by NXP Semiconductors and PCF8574TD 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
PCF8574T - 8-bit I2C I/O Expander, SOIC-16 | NXP Semiconductors
PCF8574T ObsoleteNXP Semiconductors
PCF8574TD - 8-bit I2C I/O Expander, SO-16 | NXP Semiconductors
PCF8574TD ✓ ActiveSpecification Comparison
| Parameter | PCF8574T | PCF8574TD |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Obsolete | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.61 | $0.96 |
| Product Type | 8-bit I/O Expander | — |
| Bus Interface | I2C (Standard 100 kHz, Fast 400 kHz) | — |
| Supply Voltage (VCC) | 2.5 V to 6 V | 2.5 V to 6 V |
| 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] | — |
| Standby Current | [DATA_NEEDED: Istandby in uA] | 10 uA maximum |
| Package | SOIC-16 (T suffix) | SO-16 (Small Outline, 16-pin) |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) |
| MSL Level | 1 (unlimited floor life) | [DATA_NEEDED: MSL rating] |
| RoHS Status | Compliant | Compliant |
| Process Technology | Silicon CMOS | Silicon CMOS |
| 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) |
| 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) |
| Mounting Type | — | Surface Mount |
| ESD Rating | — | [DATA_NEEDED: ESD HBM rating] |