Overview
The SN74AVC4T234ZWAR, produced by Texas Instruments, is a 4-bit, dual-supply non-inverting bus transceiver. This device is designed to facilitate asynchronous communication between two different voltage domains, making it ideal for level-translation applications. It features two separate configurable power-supply rails, VCCA and VCCB, which can operate over a wide voltage range from 0.9 V to 3.6 V. This flexibility allows the device to translate signals between various low-voltage nodes, such as 0.9 V, 1.05 V, 1.2 V, 1.8 V, 2.5 V, and 3.3 V. The SN74AVC4T234ZWAR is particularly useful in battery-powered portable applications due to its low static and dynamic power consumption, which helps extend battery life.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VCCA Supply Voltage | 0.9 | 3.6 | V |
| VCCB Supply Voltage | 0.9 | 3.6 | V |
| Input Voltage (VI) | 0 | 3.6 | V |
| Output Voltage (VO) | 0 | VCCA + 0.5 | V |
| High-Level Input Voltage (VIH) | VCCI × 0.7 | VCCI × 0.8 | V |
| Low-Level Input Voltage (VIL) | 0 | VCCI × 0.3 | V |
| High-Level Output Current (IOH) | -12 | -0.1 | mA |
| Low-Level Output Current (IOL) | 0.1 | 12 | mA |
| Operating Free-Air Temperature (TA) | -40 | 85 | °C |
| Propagation Delay Time (tpd) | 1 | 3.7 | ns |
Key Features
- Wide Operating VCC Range: Both VCCA and VCCB can operate from 0.9 V to 3.6 V, making it suitable for translating between various low-voltage nodes.
- High-Speed Translation: Supports high data rate applications with a translated signal data rate up to 380 Mbps when translating from 1.8 V to 3.3 V.
- Ioff for Partial-Power-Down Mode: Prevents backflow current by disabling I/O output circuits when the device is in partial-power-down mode.
- Low Power Consumption: Ensures low static and dynamic power consumption, extending battery life in portable applications.
- VCC Isolation: Ensures that if either VCC input is at GND, the A-side ports are in the high-impedance state.
- ESD Protection: 2000-V human-body model and 500-V charged-device model ESD protection.
Applications
- Personal Electronics: Ideal for battery-powered devices where low power consumption is critical.
- Industrial: Used in industrial control systems and automation where voltage level translation is necessary.
- Enterprise: Suitable for server and networking equipment requiring voltage level translation.
- Telecom: Used in telecommunications equipment for signal translation between different voltage domains.
- Level-Translation Applications: Interfacing devices or systems operating at different interface voltages.
Q & A
- What is the operating voltage range for VCCA and VCCB in the SN74AVC4T234ZWAR?
Both VCCA and VCCB can operate from 0.9 V to 3.6 V.
- What is the maximum propagation delay time for the SN74AVC4T234ZWAR at 3.3 V?
The maximum propagation delay time (tpd) at 3.3 V is 3.7 ns.
- Does the SN74AVC4T234ZWAR support partial-power-down mode?
Yes, it supports partial-power-down mode using Ioff circuitry to prevent backflow current.
- What is the maximum data rate supported by the SN74AVC4T234ZWAR?
The device can support a translated signal data rate up to 380 Mbps when translating from 1.8 V to 3.3 V.
- What kind of ESD protection does the SN74AVC4T234ZWAR have?
The device has 2000-V human-body model and 500-V charged-device model ESD protection.
- What are the typical applications for the SN74AVC4T234ZWAR?
It is used in personal electronics, industrial, enterprise, telecom, and level-translation applications.
- How does the VCC isolation feature work in the SN74AVC4T234ZWAR?
If either VCC input is at GND, the A-side ports are in the high-impedance state.
- What is the operating temperature range for the SN74AVC4T234ZWAR?
The operating free-air temperature range is from -40°C to 85°C.
- What are the package options available for the SN74AVC4T234ZWAR?
The device is available in uCSP (11-pin) and NFBGA (11-pin) packages.
- How does the SN74AVC4T234ZWAR ensure low power consumption?
The device ensures low static and dynamic power consumption across the entire VCC range, extending battery life in portable applications.
