Overview
The SN74LVC245ADWR is an octal bus transceiver with 3-state outputs, manufactured by Texas Instruments. This device is designed for asynchronous communication between data buses and supports mixed-mode signal operation. It features two separate supply rails, allowing for voltage translation between 3.3-V and 5-V environments. The device includes control inputs for direction and output enable, enabling flexible data transmission and bus isolation.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage Range (VCC) | -0.5 | 6.5 | V |
| Input Voltage Range (VI) | -0.5 | 6.5 | V |
| Output Voltage Range (VO) in High-Impedance State | -0.5 | 6.5 | V |
| Output Voltage Range (VO) in High or Low State | -0.5 | VCC + 0.5 | V |
| Input Clamp Current (IIK) | -50 | - | mA |
| Output Clamp Current (IOK) | -50 | - | mA |
| Continuous Output Current (IO) | -50 | 50 | mA |
| Storage Temperature Range (Tstg) | -65 | 150 | °C |
| Operating Temperature Range (TA) | -40 | 85 | °C |
| Propagation Delay Time (tpd) at 3.3 V | - | 6.3 | ns |
Key Features
- Bidirectional voltage translator supporting 3.3-V to 5-V and vice versa translation.
- Inputs accept voltages up to 5.5 V.
- Latch-up performance exceeds 250 mA per JESD 17.
- ESD protection exceeds JESD 22, with 2000-V Human-Body Model and 1000-V Charged-Device Model.
- Supports mixed-mode signal operation on all ports.
- Ioff supports live insertion, partial-power-down mode, and back drive protection.
- Control inputs (DIR, OE) for direction and output enable.
Applications
- Cable Modem Termination Systems.
- Servers.
- LED Displays.
- Network Switches.
- Telecom Infrastructure.
- Motor Drivers.
- I/O Expanders.
Q & A
- What is the primary function of the SN74LVC245ADWR?
The primary function is to act as an octal bus transceiver with 3-state outputs, enabling asynchronous communication between data buses and supporting voltage translation between 3.3-V and 5-V environments.
- What are the operating voltage ranges for the SN74LVC245ADWR?
The device operates with supply voltages ranging from 1.65 V to 3.6 V and can accept input voltages up to 5.5 V.
- What is the propagation delay time at 3.3 V?
The propagation delay time at 3.3 V is up to 6.3 ns.
- Does the SN74LVC245ADWR have ESD protection?
- What are the key applications of the SN74LVC245ADWR?
- How does the device handle latch-up performance?
The device's latch-up performance exceeds 250 mA per JESD 17.
- What is the significance of the DIR and OE inputs?
The DIR input controls the direction of data transmission (A to B or B to A), and the OE input enables or disables the outputs.
- Can the SN74LVC245ADWR be used in mixed-mode signal operations?
- What is the storage temperature range for the SN74LVC245ADWR?
- What are the package options available for the SN74LVC245ADWR?
