Overview
The SN74ALVC164245DL, produced by Texas Instruments, is a 16-bit (dual-octal) noninverting bus transceiver designed for asynchronous communication between data buses. This device features two separate supply rails, allowing it to operate in mixed voltage environments. The A port operates at 2.5 V to 3.3 V, while the B port operates at 3.3 V to 5 V, enabling level-shifting between these voltage levels. The control circuitry is powered by VCCA, and the device includes output-enable (OE) inputs to control the high-impedance state of the outputs during power-up or power-down.
Key Specifications
| Parameter | Condition | Min | Max | Unit |
|---|---|---|---|---|
| VCCA | Operating Voltage | 2.3 V | 2.7 V | V |
| VCCB | Operating Voltage | 3 V | 3.6 V / 5 V | V |
| Propagation Delay (tpd) | At 3.3 V | - | 5.8 ns | ns |
| Output Drive | At 3.3 V | - | ±24 mA | mA |
| Input Leakage Current | VI = VCCA/VCCB or GND | - | ±5 µA | µA |
| Output High Voltage (VOH) | IOH = –100 µA | VCCA – 0.2 V | - | V |
| Output Low Voltage (VOL) | IOL = 100 µA | - | 0.2 V | V |
| Package Types | - | - | TSSOP (48), SSOP (48), BGA MICROSTAR JUNIOR (54/56) | - |
Key Features
- Member of the Texas Instruments Widebus™ Family
- Maximum propagation delay of 5.8 ns at 3.3 V
- ±24-mA output drive at 3.3 V
- Control inputs VIH/VIL levels are referenced to VCCA voltage
- Latch-up performance exceeds 250 mA per JESD 17
- Allows data transmission from the A bus to the B bus or from the B bus to the A bus based on the direction-control (DIR) input
- Output-enable (OE) input to disable the device and isolate the buses
- Accepts input voltages up to VCC + 0.5 V
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 primary function of the SN74ALVC164245DL?
The SN74ALVC164245DL is a 16-bit noninverting bus transceiver designed for asynchronous communication between data buses, allowing level-shifting between different voltage environments.
- What are the operating voltage ranges for the A and B ports?
The A port operates at 2.5 V to 3.3 V, while the B port operates at 3.3 V to 5 V.
- What is the maximum propagation delay at 3.3 V?
The maximum propagation delay at 3.3 V is 5.8 ns.
- How much output drive can the device provide at 3.3 V?
The device can provide ±24 mA of output drive at 3.3 V.
- What is the purpose of the output-enable (OE) input?
The output-enable (OE) input is used to disable the device and place the outputs in a high-impedance state, effectively isolating the buses.
- What are the package types available for the SN74ALVC164245DL?
The device is available in TSSOP (48), SSOP (48), and BGA MICROSTAR JUNIOR (54/56) packages.
- What is the latch-up performance of the device?
The latch-up performance exceeds 250 mA per JESD 17.
- Can the device accept input voltages higher than its supply voltage?
Yes, the device can accept input voltages up to VCC + 0.5 V.
- What are some common applications of the SN74ALVC164245DL?
Common applications include electronic points of sale, printers and other peripherals, motor drives, wireless and telecom infrastructures, and wearable health and fitness devices.
- How should the output-enable (OE) input be connected during power-up or power-down?
The output-enable (OE) input should be tied to VCC through a pullup resistor to ensure the high-impedance state during power-up or power-down.
