TPT29508
I2C to 8-bit GPIO Expander with Voltage-level Translation
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Overview
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Development Resources
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Application
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Ordering Detail
Overview
The TPT29508 is an 8-bit GPIO expander with interruption for I2C-bus applications. It operates from a supply voltage range of 1.65 V to 5.5 V on both the I2C-bus side (VCCI) and the P-port side (VCCP), which allows bidirectional voltage-level translation and GPIO expansion between 1.8-V, 2.5-V, 3.3-V, and 5-V I2C-bus and P-ports.
The TPT29508 features a set of 8-bit Configuration, Input, Output, and Polarity Inversion registers. The opendrain interrupt (INT) output is changeable when any input state changes from its related register state. INT can be connected to the interrupt input of a microcontroller. A power-on reset initializes all registers to their default values and resets the device state machine. The TPT29508 also has a hardware RESET pin to reset the device to its default state.
All input/output pins do not have internal pull-up resistors, which helps reduce power consumption when communicating with external I/Os. One hardware pin (ADDR) selects the I2C-bus address and allows up to two devices to share the same I2C-bus.
The TPT29508 is available in the QFN1.8X2.6-16 package, and is characterized from −40°C to +105°C.
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Status
Production
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Rating
Industrial
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Drivers Per Package
2
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Receivers Per Package
8
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VCC (Min) (V)
1.65
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VCC (Max) (V)
5.5
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Data Rate (Max) (kBPS)
400
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ICC (Max) (mA)
0.033
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ESD HBM (kV)
4
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IEC-61000-4-2 Contact (kV)
/
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Operating Temperature Range (℃)
-40 to +125
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Package
QFN1.8X2.6-16
Development Resources
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Documentation
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Show FilterHidden FilterDocumentation
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Data Sheet
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Selection Guide
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Newsletter
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Application Note
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Technical Note
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User Guide
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Test Report
- Document Name
- Type
- Language
- Date
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Selection GuideEnglish03/06/2026
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Data SheetEnglish04/20/2026
I2C to 8-bit GPIO Expander with Voltage-level Translation
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Application
• Servers/Storages
• Routers (Telecom Switching Equipment)
• Personal Computers
Ordering Detail
| Order Part Number | Buy | Samples | Rating | Feature | Status | 1ku Price | Release Date | Package | Lead time (week) | MSL | Packing | MPQ | CPQ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TPT29508-QN6R | Industrial Grade | / | Production | / | 2026-04-13 | QFN1.8X2.6-16 | 24 | MSL1 | T&R | 3000 | 120000 |
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