SX1508IULTRT vs TCA6424ARGJR Comparison
Detailed side-by-side comparison of SX1508IULTRT by Semtech Corporation and TCA6424ARGJR by Texas Instruments. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Semtech Corporation
SX1508IULTRT - 8-bit I2C GPIO Expander with LED Driver | Semtech
SX1508IULTRT ✓ ActiveTexas Instruments
TCA6424ARGJR - 24-bit I2C/SMBus I/O Expander | Texas Instruments
TCA6424ARGJR ✓ ActiveSpecification Comparison
| Parameter | SX1508IULTRT | TCA6424ARGJR |
|---|---|---|
| Brand | Semtech Corporation | Texas Instruments |
| Category | Interface ICs | Interface ICs |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.95 | $1.55 |
| Interface Type | I2C (Standard / Fast / High-Speed) | — |
| Number of I/O | 8 | — |
| I2C Clock Frequency | 400 kHz | up to 400 kHz |
| Supply Voltage (VCC) | 1.2 V to 3.6 V | — |
| I/O Voltage Tolerance | Up to 5.5 V | — |
| Output Drive | 8 mA per pin (sink/source) | — |
| LED PWM Frequency | 2 Hz to 2 kHz | — |
| LED PWM Resolution | 4 to 124 duty steps | — |
| Keypad Engine | Up to 8x8 matrix, auto-scan | — |
| Interrupt Output | Active-low INT with masking | Yes (open-drain INT, active-low) |
| Programmable Pull-ups | Yes (internal, per pin) | — |
| Selectable I2C Addresses | 4 (via ADDR0/ADDR1 pins) | — |
| Operating Temperature | -40 C to +85 C | — |
| Package | 20-QFN-UT (3x3 mm) Exposed Pad | UQFN-32 (RGJ) 5x5 mm with EP |
| Packaging | Tape & Reel (TR) | — |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant | Compliant |
| Number of I/O Bits | — | 24 |
| Interface | — | I2C, SMBus |
| Operating Supply Voltage (VCCI) | — | 1.65 V to 5.5 V |
| P-port Voltage (VCCP) | — | 1.65 V to 5.5 V |
| Number of Ports | — | 3 x 8-bit (P0, P1, P2) |
| Hardware Address Pins | — | A0, A1, A2 (3 pins, up to 8 devices on bus) |
| Reset Pin | — | Yes (RESET, active-low) |
| Configuration Registers | — | Yes (separate input/output/polarity/configuration) |
| Operating Temperature Range | — | -40C to +85C (industrial) |
| ESD Rating | — | [DATA_NEEDED: HBM/CDM ESD rating] |