Overview
The MC74HC245ADWG 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 is part of the high-performance silicon-gate CMOS family, offering compatibility with standard CMOS outputs and, with external pull-up resistors, compatibility with LSTTL outputs as well. The MC74HCT245A variant can also serve as a level converter for interfacing TTL or NMOS outputs to high-speed CMOS inputs.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VCC (DC Supply Voltage) | 2.0 | 6.0 | V |
| VIN, VOUT (DC Input, Output Voltage) | 0 | VCC | V |
| TA (Operating Free-Air Temperature) | -55 | 125 | °C |
| tr, tf (Input Rise or Fall Time) | 0 | 1000 | ns |
| VIH (Minimum High-Level Input Voltage) | 1.5 | 4.2 | V |
| VIL (Maximum Low-Level Input Voltage) | 0.5 | 1.8 | V |
| VOH (Minimum High-Level Output Voltage) | 1.9 | 5.9 | V |
| VOL (Maximum Low-Level Output Voltage) | 0.1 | 0.4 | V |
| Iin (Maximum Input Leakage Current) | ±1.0 | ±1.0 | μA |
| IOZ (Maximum Three-State Leakage Current) | ±10 | ±10 | μA |
| ICC (Maximum Quiescent Supply Current) | 4.0 | 160 | μA |
Key Features
- Output Drive Capability: 15 LSTTL Loads
- Outputs Directly Interface to CMOS, NMOS, and TTL
- Low Input Current: 1 μA
- High Noise Immunity Characteristic of CMOS Devices
- In Compliance with the Requirements Defined by JEDEC Standard No. 7A
- Chip Complexity: 308 FETs or 77 Equivalent Gates
- AEC-Q100 Qualified and PPAP Capable for Automotive and Other Applications Requiring Unique Site and Control Change Requirements
- Pb-Free, Halogen Free, and RoHS Compliant
Applications
The MC74HC245ADWG is suitable for a variety of applications requiring bidirectional data transfer between two buses. These include:
- Data Bus Transceivers in Microprocessor Systems
- Level Conversion Between TTL and CMOS Logic
- Industrial Automation and Control Systems
- Automotive Electronics Requiring High Reliability and Compliance with AEC-Q100 Standards
- Embedded Systems and IoT Devices
Q & A
- What is the operating voltage range of the MC74HC245ADWG?
The operating voltage range is from 2.0 to 6.0 V for the MC74HC245A and from 4.5 to 5.5 V for the MC74HCT245A.
- What is the maximum input leakage current?
The maximum input leakage current is ±1.0 μA.
- Is the MC74HC245ADWG compatible with TTL outputs?
Yes, with external pull-up resistors, the MC74HC245ADWG is compatible with LSTTL outputs.
- What is the maximum three-state leakage current?
The maximum three-state leakage current is ±10 μA.[
- Is the device RoHS compliant?
Yes, the MC74HC245ADWG is Pb-Free, Halogen Free, and RoHS Compliant.[
- What are the typical applications of the MC74HC245ADWG?
Typical applications include data bus transceivers in microprocessor systems, level conversion between TTL and CMOS logic, industrial automation, automotive electronics, and embedded systems.[
- What is the chip complexity of the MC74HC245ADWG?
The chip complexity is 308 FETs or 77 equivalent gates.[
- Is the device AEC-Q100 qualified?
Yes, the MC74HC245ADWG is AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.[
- What is the output drive capability of the MC74HC245ADWG?
The output drive capability is 15 LSTTL loads.[
- What are the package options available for the MC74HC245ADWG?
The device is available in SOIC-20 and TSSOP-20 packages.[
