Overview
The TXB0104RGYRG4, produced by Texas Instruments, is a 4-bit bidirectional voltage-level translator designed to facilitate communication between devices operating at different voltage levels. This device is part of the TXB0104 family and is packaged in a VQFN-14 format. It supports universal low-voltage bidirectional translation between various voltage nodes, making it versatile for a wide range of applications.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage, VCCA | -0.5 | 4.6 | V |
| Supply Voltage, VCCB | -0.5 | 6.5 | V |
| Input Voltage, VI (A port) | -0.5 | 4.6 | V |
| Input Voltage, VI (B port) | -0.5 | 6.5 | V |
| Output Voltage, VO (High-Impedance State) | -0.5 | 4.6 (A port), 6.5 (B port) | V |
| Operating Temperature Range | -40 | 85 | °C |
| Data Rate | 100 | Mb/s | |
| Package Type | VQFN-14 | ||
| ESD Protection (Human-Body Model) | 2500 V (A port), ±15 kV (B port) | V | |
| ESD Protection (Charged-Device Model) | 1500 V | V |
Key Features
- 1.2-V to 3.6-V on A port and 1.65-V to 5.5-V on B port (VCCA ≤ VCCB)
- VCC isolation feature: if either VCC input is at GND, all outputs are in the high-impedance state
- Output enable (OE) input circuit referenced to VCCA
- Low power consumption, 5-μA maximum ICC
- I OFF supports partial power-down mode operation
- Latch-up performance exceeds 100 mA per JESD 78, Class II
- ESD protection exceeds JESD 22 standards
- Automatic direction sensing without direction-control signal
- Support for bidirectional translation between various voltage nodes (1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V)
Applications
- Headsets
- Smartphones
- Tablets
- Desktop PCs
- Any system requiring level translation between different voltage domains
Q & A
- What is the voltage range for the A and B ports of the TXB0104?
The A port operates from 1.2 V to 3.6 V, and the B port operates from 1.65 V to 5.5 V, with VCCA ≤ VCCB.
- What is the purpose of the VCC isolation feature?
If either VCC input is at GND, all outputs are placed in the high-impedance state.
- How does the output enable (OE) input circuit work?
The OE input circuit is referenced to VCCA, and when OE is low, all outputs are in the high-impedance state. During power up or power down, OE must be tied to GND through a pulldown resistor.
- What is the maximum power consumption of the TXB0104?
The maximum power consumption (ICC) is 5 μA.
- Does the TXB0104 support partial power-down mode?
Yes, the TXB0104 supports partial power-down mode operation using the I OFF circuitry.
- What level of ESD protection does the TXB0104 offer?
The TXB0104 offers ESD protection exceeding JESD 22 standards: 2500 V Human-Body Model for the A port and ±15 kV Human-Body Model for the B port.
- What is the data rate capability of the TXB0104?
The data rate capability is up to 100 Mb/s.
- In what package types is the TXB0104 available?
The TXB0104 is available in several package types, including VQFN-14, SOIC-14, TSSOP-14, and others.
- What are some common applications for the TXB0104?
Common applications include headsets, smartphones, tablets, and desktop PCs, as well as any system requiring level translation between different voltage domains).
- How does the automatic direction sensing work in the TXB0104?
The TXB0104 does not require a direction-control signal. It uses output one-shots to detect rising or falling edges on the A or B ports, which speeds up the transition times).
