Overview
The SN74AVCB164245ZRDR is a 16-bit dual-supply bus transceiver produced by Texas Instruments. This device is part of the Widebus™ family and is designed for asynchronous communication between data buses, allowing for universal low-voltage bidirectional translation between various voltage nodes (1.5 V, 1.8 V, 2.5 V, and 3.3 V). It features configurable voltage translation and 3-state outputs, making it versatile for mixed-voltage-mode data communications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCCA Supply Voltage | 1.4 | 3.6 | V | |
| VCCB Supply Voltage | 1.4 | 3.6 | V | |
| VIH High-Level Input Voltage (Data Inputs) | 1.7 | 2.7 | V (for VCCI = 1.95 V to 2.7 V) | |
| VIL Low-Level Input Voltage (Data Inputs) | 0.7 | 0.8 | V (for VCCI = 1.95 V to 2.7 V) | |
| IOH High-Level Output Current | -12 | mA (for VCCO = 3 V) | ||
| IOL Low-Level Output Current | 12 | mA (for VCCO = 3 V) | ||
| TA Operating Free-Air Temperature | -40 | 85 | °C |
Key Features
- Overvoltage-tolerant inputs/outputs allowing mixed-voltage-mode data communications.
- Fully configurable dual-rail design, enabling each port to operate over the full 1.4-V to 3.6-V power-supply range without speed degradation.
- Dynamic Drive Capability equivalent to standard outputs with IOH and IOL of ±24 mA.
- Latch-Up performance exceeds 100 mA per JESD 78, Class II.
- ESD protection exceeds JESD 22 (2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model).
- Ioff supports partial-power-down mode operation, preventing damaging current backflow through the device when powered down.
- DOC™ circuitry dynamically changes output impedance, resulting in noise reduction.
- Output-enable (OE) input to disable outputs and isolate buses.
Applications
The SN74AVCB164245ZRDR is suitable for various applications requiring asynchronous communication between data buses, particularly in mixed-voltage systems. It is ideal for use in:
- Embedded systems requiring voltage translation between different voltage domains.
- Communication interfaces in industrial control systems.
- Automotive electronics where multiple voltage levels are present.
- Consumer electronics with mixed-voltage signal processing.
Q & A
- What is the primary function of the SN74AVCB164245ZRDR?
The primary function is to act as a 16-bit dual-supply bus transceiver for asynchronous communication between data buses, allowing for voltage translation between different voltage levels.
- What is the voltage range for VCCA and VCCB?
Both VCCA and VCCB can operate over a voltage range of 1.4 V to 3.6 V.
- How does the device handle partial-power-down mode?
The device features Ioff circuitry that disables the outputs, preventing damaging current backflow when the device is powered down.
- What is the purpose of the DOC™ circuitry?
The DOC™ circuitry dynamically changes output impedance, resulting in noise reduction.
- How does the output-enable (OE) input function?
The OE input can be used to disable the outputs, effectively isolating the buses.
- What are the ESD protection levels for this device?
The device exceeds JESD 22 ESD protection levels (2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model).
- What is the operating temperature range for this device?
The operating temperature range is from -40°C to 85°C.
- Can the device operate with mixed-voltage inputs and outputs?
Yes, the device is designed for overvoltage-tolerant inputs/outputs, allowing mixed-voltage-mode data communications.
- What is the latch-up performance of the device?
The latch-up performance exceeds 100 mA per JESD 78, Class II.
- What are some common applications for this device?
Common applications include embedded systems, industrial control systems, automotive electronics, and consumer electronics with mixed-voltage signal processing.
