Overview
The 74HCT245DTR2G is an octal 3-state noninverting bus transceiver produced by onsemi. This device is designed for 2-way asynchronous communication between data buses and is identical in pinout to the LS245. It features TTL-compatible inputs and outputs that can directly interface with CMOS, NMOS, and TTL devices. The 74HCT245DTR2G is part of the high-performance silicon-gate CMOS family, offering high noise immunity and compliance with JEDEC Standard No. 7A.
Key Specifications
| Parameter | Condition | Value | Unit |
|---|---|---|---|
| VCC | DC Supply Voltage | 4.5 to 5.5 | V |
| VIN, VOUT | DC Input Voltage, Output Voltage (Referenced to GND) | 0 to VCC | V |
| TA | Operating Temperature, All Package Types | -55 to +125 | °C |
| VIH | Minimum High-Level Input Voltage | 2.0 | V |
| VIL | Maximum Low-Level Input Voltage | 0.8 | V |
| VOH | Minimum High-Level Output Voltage | 4.4 to 5.4 | V |
| ESD Performance | HBM, Machine Model | 2000 V, 200 V | V |
| Input Rise and Fall Time | VCC = 4.5 V | 0 to 500 ns | ns |
Key Features
- Output Drive Capability: 15 LSTTL Loads
- TTL/NMOS-Compatible Input Levels
- Outputs Directly Interface to CMOS, NMOS, and TTL
- Operating Voltage Range: 4.5 to 5.5 V
- Low Input Current: 1.0 μA
- High Noise Immunity Characteristic of CMOS Devices
- In Compliance with the Requirements Defined by JEDEC Standard No. 7A
- ESD Performance: HBM ≥ 2000 V; Machine Model ≥ 200 V
- Pb-Free Device
Applications
The 74HCT245DTR2G is suitable for various applications requiring 2-way asynchronous communication between data buses. It is commonly used in:
- Data transmission and reception systems
- Bus interfacing and isolation
- Digital logic circuits and systems
- Embedded systems and microcontrollers
- Communication and networking equipment
Q & A
- What is the primary function of the 74HCT245DTR2G?
The primary function of the 74HCT245DTR2G is to facilitate 2-way asynchronous communication between data buses.
- What is the operating voltage range of the 74HCT245DTR2G?
The operating voltage range is from 4.5 to 5.5 volts.
- What types of devices can the outputs of the 74HCT245DTR2G interface with?
The outputs can directly interface with CMOS, NMOS, and TTL devices.
- What is the ESD performance of the 74HCT245DTR2G?
The ESD performance is HBM ≥ 2000 V and Machine Model ≥ 200 V.
- Is the 74HCT245DTR2G a Pb-Free device?
- What is the input current of the 74HCT245DTR2G?
The low input current is 1.0 μA.
- How does the Direction control work on the 74HCT245DTR2G?
The Direction control determines whether data flows from Bus A to Bus B or from Bus B to Bus A.
- What is the purpose of the Output Enable pin on the 74HCT245DTR2G?
The Output Enable pin is used to place the I/O ports into high-impedance states.
- What is the chip complexity of the 74HCT245DTR2G?
The chip complexity is 308 FETs or 77 equivalent gates.
- What are the typical applications of the 74HCT245DTR2G?
Typical applications include data transmission and reception systems, bus interfacing and isolation, digital logic circuits, embedded systems, and communication equipment.
