Overview
The TXB0108YZPR2, produced by Texas Instruments, is an 8-bit noninverting voltage-level translator designed for interfacing devices or systems operating at different interface voltages. This device is part of the TXB0108 family and is specifically packaged in the DSGBA (20-pin) format. It allows for universal low-voltage bidirectional translation between various voltage nodes, including 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V.
The TXB0108 features two separate configurable power-supply rails: VCCA for the A port and VCCB for the B port. VCCA can accept any supply voltage from 1.2 V to 3.6 V, while VCCB can accept voltages from 1.65 V to 5.5 V. The device includes an output-enable (OE) input that places all outputs in a high-impedance state when low, and it is designed for partial-power-down applications with Ioff circuitry to prevent damaging current backflow.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCCA (A-port supply voltage) | 1.2 | - | 3.6 | V |
| VCCB (B-port supply voltage) | 1.65 | - | 5.5 | V |
| Operating Temperature | -40 | - | 85 | °C |
| Data Rate (VCCA = 1.2 V, VCCB = 1.8 V) | - | 20 | - | Mbps |
| Data Rate (VCCA = 3.3 V, VCCB = 3.3 V) | - | 100 | - | Mbps |
| Propagation Delay (tpd) A to B (VCCA = 1.2 V, VCCB = 1.8 V) | - | 9.5 | - | ns |
| Propagation Delay (tpd) B to A (VCCA = 1.2 V, VCCB = 1.8 V) | - | 9.2 | - | ns |
| Package Type | - | DSGBA (20-pin) | - | - |
| Package Dimensions | - | 1.90 mm x 2.40 mm | - | - |
Key Features
- Universal Voltage Translation: Supports bidirectional translation between various voltage nodes (1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V).
- Configurable Power Rails: Separate power-supply rails for A and B ports (VCCA and VCCB).
- Output Enable (OE): Places all outputs in a high-impedance state when low.
- Partial Power-Down Capability: Ioff circuitry prevents damaging current backflow during power-down.
- Buffered Architecture with Edge-Rate Accelerators: Improves overall data rate.
- Low Power Consumption: Low quiescent current in both active and shutdown modes.
Applications
- Interface Translation: Ideal for translating logic voltage levels between different voltage domains in a system.
- Embedded Systems: Used in various embedded systems where different components operate at different voltage levels.
- Industrial Automation: Suitable for industrial automation systems requiring voltage translation.
- Consumer Electronics: Applied in consumer electronics for interfacing devices with different voltage requirements.
- Automotive Systems: Used in automotive systems for voltage translation between different components.
Q & A
- What is the TXB0108YZPR2 used for?
The TXB0108YZPR2 is used for voltage-level translation between devices or systems operating at different interface voltages.
- What are the voltage ranges for VCCA and VCCB?
VCCA can accept voltages from 1.2 V to 3.6 V, while VCCB can accept voltages from 1.65 V to 5.5 V.
- What is the purpose of the output-enable (OE) input?
The OE input places all outputs in a high-impedance state when it is low.
- Can the TXB0108YZPR2 handle partial power-down applications?
Yes, it includes Ioff circuitry to prevent damaging current backflow during power-down.
- What is the maximum data rate for the TXB0108YZPR2?
The maximum data rate can be up to 100 Mbps depending on the voltage configurations.
- What package type is the TXB0108YZPR2 available in?
The TXB0108YZPR2 is available in the DSGBA (20-pin) package.
- What are the dimensions of the DSGBA package?
The DSGBA package dimensions are 1.90 mm x 2.40 mm.
- Does the TXB0108YZPR2 support open-drain signal translation?
No, it is designed for push-pull CMOS logic outputs. For open-drain signal translation, refer to TI TXS products.
- What is the operating temperature range for the TXB0108YZPR2?
The operating temperature range is from -40°C to 85°C.
- What is the typical propagation delay for the TXB0108YZPR2?
The typical propagation delay (tpd) from A to B or B to A is around 9-10 ns depending on the voltage configurations.
