Overview
The SN74LVC16245A, specifically the SN74LVC16245AZRDR, is a 16-bit (dual-octal) noninverting bus transceiver designed by Texas Instruments. This device is part of the Texas Instruments Widebus Family and is optimized for asynchronous communication between data buses. It can be used as two 8-bit transceivers or one 16-bit transceiver, allowing data transmission from the A bus to the B bus or vice versa, depending on the logic level at the direction-control (DIR) input. The device operates within a voltage range of 1.65 V to 3.6 V, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 1.65 | 3.6 | V | |
| Input Voltage Range | -0.5 | 6.5 | V | |
| Output Voltage Range | -0.5 | VCC + 0.5 | V | |
| Propagation Delay (tpd) at 3.3 V | 4 | ns | ||
| Output Ground Bounce (VOLP) at 3.3 V, 25°C | < 0.8 | V | ||
| Output VOH Undershoot (VOHV) at 3.3 V, 25°C | > 2 | V | ||
| High-Level Output Current (IOH) at 3 V | -12 | mA | ||
| Low-Level Output Current (IOL) at 3 V | 12 | mA | ||
| Operating Temperature Range | -40 | 85 | °C |
Key Features
- Operates from 1.65 V to 3.6 V.
- Inputs accept voltages up to 5.5 V.
- Maximum propagation delay of 4 ns at 3.3 V.
- Supports mixed-mode signal operation on all ports (5-V input/output voltage with 3.3-V VCC).
- Ioff supports live insertion, partial-power-down mode, and back-drive protection.
- Latch-up performance exceeds 250 mA per JESD 17.
- ESD protection exceeds JESD 22 – 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
Applications
- Electronic Points of Sale.
- Printers and Other Peripherals.
- Motor Drives.
- Wireless and Telecom Infrastructures.
- Wearable Health and Fitness Devices.
Q & A
- What is the voltage range for the SN74LVC16245A? The device operates from 1.65 V to 3.6 V.
- What is the maximum propagation delay at 3.3 V? The maximum propagation delay is 4 ns at 3.3 V.
- Can the SN74LVC16245A handle mixed-mode signal operation? Yes, it supports mixed-mode signal operation on all ports (5-V input/output voltage with 3.3-V VCC).
- What kind of ESD protection does the SN74LVC16245A offer? It exceeds JESD 22 standards with 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
- What are the typical applications of the SN74LVC16245A? It is used in electronic points of sale, printers, motor drives, wireless and telecom infrastructures, and wearable health and fitness devices.
- How does the SN74LVC16245A handle power-down modes? It supports live insertion, partial-power-down mode, and back-drive protection.
- What is the operating temperature range of the SN74LVC16245A? The operating temperature range is from -40°C to 85°C.
- Can the SN74LVC16245A be used as multiple transceivers? Yes, it can be used as two 8-bit transceivers or one 16-bit transceiver.
- How do you ensure the high-impedance state during power up or power down? The output-enable (OE) input should be tied to VCC through a pullup resistor.
- What is the significance of the DIR input in the SN74LVC16245A? The DIR input determines the direction of data transmission between the A and B buses.
