Overview
The SN74LVC16T245ZQLR is a 16-bit dual-supply bus transceiver designed by Texas Instruments for voltage-level translation in various digital applications. This device is part of the 74LVC series and is optimized for asynchronous communication between two data buses operating at different voltage levels. It supports bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes, making it highly versatile for mixed-voltage systems.
The transceiver features two separate configurable power-supply rails, with the A port tracking VCCA and the B port tracking VCCB, both accepting supply voltages from 1.65 V to 5.5 V. The device includes control inputs for direction and output enable, which can place both output ports into a high-impedance state if necessary.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package / Case | BGA-Microstar-Junior-56 | |
| Supply Voltage - Min | 1.65 | V |
| Supply Voltage - Max | 5.5 | V |
| Minimum Operating Temperature | -40 | °C |
| Maximum Operating Temperature | +85 | °C |
| Propagation Delay Time | 23.8 | ns |
| High Level Output Current | -32 | mA |
| Low Level Output Current | 32 | mA |
| Output Type | 3-State, Non-Inverted | |
| Data Rate | Up to 100 Mbps |
Key Features
- Control Inputs VIH/VIL Levels: Referenced to VCCA voltage.
- VCC Isolation Feature: If either VCC input is at GND, both ports are in the high-impedance state.
- Overvoltage-Tolerant Inputs and Outputs: Allow mixed voltage-mode data communications.
- Fully Configurable Dual-Rail Design: Each port can operate over the full 1.65-V to 5.5-V power-supply range.
- Ioff Support: Supports partial-power-down mode operation.
- Latch-Up Performance: Exceeds 100 mA per JESD 78, Class II.
- ESD Protection: Exceeds JESD 22 standards.
- 3-State Outputs: Suitable for asynchronous communication between buses operating at different voltage levels.
Applications
- Personal Electronics: Ideal for devices that require voltage translation between different components.
- Industrial Systems: Used in industrial control systems where mixed-voltage environments are common.
- Enterprise Devices: Suitable for server and networking equipment that require reliable voltage-level translation.
- Telecom Equipment: Used in telecommunications systems to ensure seamless data transfer between different voltage domains.
Q & A
- Q: Is the SN74LVC16T245ZQLR compatible with 5V and 3.3V systems?
A: Yes, the SN74LVC16T245ZQLR supports voltage translation between 5V and 3.3V systems, making it versatile for mixed-voltage applications.
- Q: What is the maximum data rate supported by the SN74LVC16T245ZQLR?
A: The SN74LVC16T245ZQLR can support data rates up to 100 Mbps, enabling high-speed data transfer between different voltage domains.
- Q: What is the operating temperature range of the SN74LVC16T245ZQLR?
A: The operating temperature range is from -40°C to +85°C.
- Q: Does the SN74LVC16T245ZQLR support partial-power-down mode operation?
A: Yes, the device supports partial-power-down mode operation using Ioff circuitry.
- Q: What type of output does the SN74LVC16T245ZQLR have?
A: The device features 3-state, non-inverted outputs.
- Q: How does the VCC isolation feature work?
A: If either VCC input is at GND, both ports are in the high-impedance state.
- Q: What is the propagation delay time of the SN74LVC16T245ZQLR?
A: The propagation delay time is approximately 23.8 ns.
- Q: Is the SN74LVC16T245ZQLR ESD protected?
A: Yes, the device exceeds JESD 22 standards for ESD protection.
- Q: What is the logic family of the SN74LVC16T245ZQLR?
A: The logic family is CMOS.
- Q: How do the control pins (DIR and OE) operate?
A: The control pins are supplied by VCCA and control the direction and output enable of the transceiver.
