Overview
The 74AVCH4T245PW,112 is a 4-bit, dual supply transceiver produced by Nexperia USA Inc. This device is designed to enable bidirectional level translation and can be used either as two 2-bit transceivers or as a single 4-bit transceiver. It features two 2-bit input-output ports (nAn and nBn), a direction control input (nDIR), an output enable input (nOE), and dual supply pins (VCC(A) and VCC(B)). This versatility makes it suitable for a wide range of applications requiring voltage translation between different low-voltage nodes.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Type Number | 74AVCH4T245PW | - |
| Package | TSSOP16 | - |
| VCC(A) | 0.8 - 3.6 | V |
| VCC(B) | 0.8 - 3.6 | V |
| Logic Switching Levels | CMOS/LVTTL | - |
| Output Drive Capability | ± 12 | mA |
| Propagation Delay (tpd) | 2.1 | ns |
| Number of Bits | 4 | - |
| Operating Temperature (Tamb) | -40 to 125 | °C |
| Thermal Resistance (Rth(j-a)) | 124 | K/W |
Key Features
- Bidirectional Level Translation: Enables translation between any of the low-voltage nodes (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V).
- Dual Supply Pins: VCC(A) and VCC(B) can be supplied at any voltage between 0.8 V and 3.6 V.
- Direction Control and Output Enable: Features a direction control input (nDIR) and an output enable input (nOE) to control data flow and output state.
- Bus Hold Circuitry: Active bus hold circuitry holds unused or floating data inputs at a valid logic level, eliminating the need for external pull-up or pull-down resistors.
- IOFF Circuitry: Prevents damaging backflow current through the device when it is powered down.
- Compliance with JEDEC Standards: Complies with various JEDEC standards (JESD8-12, JESD8-11, JESD8-7, JESD8-5, JESD8-B).
Applications
The 74AVCH4T245PW,112 is versatile and can be used in various applications across different industries, including:
- Automotive: For voltage translation in automotive systems.
- Industrial: In industrial control systems and automation.
- Consumer Electronics: For mobile, computing, and consumer devices requiring level translation.
- Wearables and IoT Devices: Where low power and small form factor are crucial.
Q & A
- What is the primary function of the 74AVCH4T245PW,112?
The primary function is to enable bidirectional level translation between different voltage levels.
- What are the voltage ranges for VCC(A) and VCC(B)?
Both VCC(A) and VCC(B) can be supplied at any voltage between 0.8 V and 3.6 V.
- How does the direction control input (nDIR) work?
A HIGH on nDIR allows transmission from nAn to nBn, and a LOW on nDIR allows transmission from nBn to nAn.
- What is the purpose of the output enable input (nOE)?
The output enable input (nOE) can be used to disable the outputs, effectively isolating the buses.
- What is the significance of IOFF circuitry in this device?
The IOFF circuitry prevents damaging backflow current through the device when it is powered down.
- Does the device have any bus hold features?
Yes, it has active bus hold circuitry to hold unused or floating data inputs at a valid logic level.
- What are the operating temperature ranges for this device?
The device operates within a temperature range of -40°C to 125°C.
- What package type is used for the 74AVCH4T245PW,112?
The device is packaged in a TSSOP16 package.
- Is the device compliant with any industry standards?
Yes, it complies with various JEDEC standards.
- What are some common applications for this device?
It is used in automotive, industrial, consumer electronics, and wearables/IoT devices.
