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TXB0104 4-Bit Bidirectional Voltage Level Translator Module — Auto Direction, ESD Protection, 1.2–5.5V

TXB0104 4-Bit Bidirectional Voltage Level Translator Module Auto Direction, ESD Protection, 1.2–5.5V

$7.24 USD

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TXB0104 4-Bit Bidirectional Voltage Level Translator Module — Auto Direction, ESD Protection

The TXB0104 level translator module provides 4-channel bidirectional voltage translation between any two logic levels from 1.2V to 5.5V. Unlike MOSFET-based level shifters, the TXB0104 uses Texas Instruments' proprietary output enable and direction-sensing circuitry for automatic direction detection — no manual direction control pin required. Built-in ESD protection on all I/O pins makes it robust for production use.

Key Specifications

Parameter	Value
IC	Texas Instruments TXB0104
Channels	4-bit (4 bidirectional I/O)
VCCA Range	1.2V – 3.6V (low-voltage side)
VCCB Range	1.65V – 5.5V (high-voltage side)
Direction Control	Automatic (no DIR pin needed)
ESD Protection	Yes (±15kV HBM on all I/O)
Max Data Rate	100Mbps (push-pull signals)
Output Enable	Active-high OE pin

TXB0104 vs MOSFET Level Shifter — When to Use Which?

Feature	TXB0104	MOSFET Level Shifter
Direction Control	Automatic	Manual (or open-drain only)
Signal Type	Push-pull (SPI, GPIO)	Open-drain (I²C, 1-Wire)
Speed	Up to 100Mbps	Limited by pull-up resistors
I²C Compatible	❌ No (push-pull only)	✅ Yes
Best For	SPI, GPIO, UART, parallel bus	I²C, 1-Wire, open-drain signals

Why Choose TXB0104?

✅ Auto direction sensing — no DIR pin wiring, simpler circuit design
✅ ESD protection (±15kV HBM) — robust for production and field use
✅ 100Mbps capable — suitable for high-speed SPI and parallel bus translation
✅ 1.2–5.5V range — covers 1.8V, 2.5V, 3.3V, and 5V logic families
✅ Texas Instruments IC — genuine TI quality and reliability