Overview
The SN74AVC1T45DCKRG4 is a single-bit noninverting bus transceiver manufactured by Texas Instruments. This device is designed for asynchronous communication between two data buses and features a fully configurable dual-rail design. It operates with two separate power-supply rails, VCCA and VCCB, which can be configured over a wide voltage range from 1.08V to 3.6V. This flexibility makes it ideal for universal low-voltage, bidirectional translation between various voltage nodes such as 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Category | Integrated Circuits (ICs) - Logic - Translators, Level Shifters | |
| Package | 6-TSSOP, SC-88, SOT-363 | |
| Translator Type | Voltage Level | |
| Channel Type | Bidirectional | |
| Number of Circuits | 1 | |
| Channels per Circuit | 1 | |
| Voltage - VCCA | 1.2V ~ 3.6V | V |
| Voltage - VCCB | 1.2V ~ 3.6V | V |
| Data Rate | Up to 500Mbps | Mbps |
| Operating Temperature | -40°C ~ 85°C | °C |
| Output Type | Tri-State, Non-Inverted | |
| Output Current | ±12mA at 3.3V | mA |
| Propagation Delay | 2.8ns | ns |
| ESD Protection | ±2000V Human Body Model, 200V Machine Model, ±1000V Charged-Device Model | V |
Key Features
- Fully configurable dual-rail design allowing each port to operate over the full 1.08V to 3.6V power-supply range.
- VCC isolation feature – if either VCC input is at GND, then both ports are in the high-impedance state.
- DIR input circuit referenced to VCCA.
- ±12mA output drive at 3.3V.
- I/Os are 4.6V tolerant.
- Ioff supports partial-power-down mode operation.
- High data rates: up to 500Mbps (1.08V to 3.3V translation), 320Mbps (<1.8V to 3.3V translation), and more.
- Latch-up performance exceeds 100mA per JESD 78, Class II.
- ESD protection exceeds JESD 22 standards.
- NanoFree package technology for compact and efficient design.
Applications
The SN74AVC1T45DCKRG4 is suitable for a variety of applications requiring low-voltage, bidirectional translation between different voltage nodes. These include:
- Asynchronous communication between two data buses.
- Universal low-voltage translation in systems using 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes.
- Partial-power-down applications where Ioff circuitry is necessary to prevent damaging current backflow.
- Systems requiring high data rates and low propagation delays.
- Compact and efficient designs leveraging NanoFree package technology.
Q & A
- What is the primary function of the SN74AVC1T45DCKRG4?
The SN74AVC1T45DCKRG4 is a single-bit noninverting bus transceiver designed for asynchronous communication between two data buses.
- What is the voltage range for VCCA and VCCB?
VCCA and VCCB can operate over a voltage range from 1.08V to 3.6V.
- What are the typical data rates supported by this device?
The device supports data rates up to 500Mbps (1.08V to 3.3V translation), 320Mbps (<1.8V to 3.3V translation), and other rates depending on the voltage translation.
- What is the VCC isolation feature?
If either VCC input is at GND, then both ports are in the high-impedance state.
- What is the output current capability at 3.3V?
The output current capability is ±12mA at 3.3V.
- Is the device ESD protected?
Yes, the device has ESD protection exceeding JESD 22 standards, including ±2000V Human Body Model, 200V Machine Model, and ±1000V Charged-Device Model.
- What package types are available for this device?
The device is available in 6-TSSOP, SC-88, and SOT-363 packages.
- What is the operating temperature range for this device?
The operating temperature range is -40°C to 85°C.
- Does the device support partial-power-down mode operation?
Yes, the device supports partial-power-down mode operation using Ioff circuitry.
- What is the significance of NanoFree package technology?
NanoFree package technology is a compact and efficient design that uses the die as the package, reducing the overall size of the device.
