Overview
The MC74HC244ADTG is an octal 3-state noninverting buffer/line driver/line receiver produced by onsemi. This device is part of the HC (High-Speed CMOS) logic family and is designed to be used in various bus-oriented systems, including 3-state memory address drivers and clock drivers. It is compatible with standard CMOS outputs and, with pull-up resistors, can also interface with LSTTL outputs. The MC74HC244ADTG is available in a TSSOP-20 package, making it suitable for a wide range of applications where compact size and high performance are required.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | 2.0 to 6.0 | V |
| DC Input Voltage (VIN) | –0.5 to VCC + 0.5 | V |
| DC Output Voltage (VOUT) | –0.5 to VCC + 0.5 | V |
| Operating Free-Air Temperature (TA) | –55 to +125 | °C |
| Input Rise or Fall Time (tr, tf) | 0 to 1000 ns (depending on VCC) | ns |
| Maximum Propagation Delay (tPLH, tPHL) | 15 to 96 ns (depending on VCC) | ns |
| Maximum Output Transition Time (tTLH, tTHL) | 10 to 60 ns (depending on VCC) | ns |
| Maximum Input Capacitance (CIN) | 10 | pF |
| Maximum Three-State Output Capacitance (COUT) | 15 | pF |
| Power Dissipation Capacitance (CPD) | 5.0 (typical at 25°C) | pF |
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: 136 FETs or 34 Equivalent Gates
- Pb-Free, Halogen Free, and RoHS Compliant
- AEC-Q100 Qualified and PPAP Capable for Automotive and Other Applications Requiring Unique Site and Control Change Requirements
Applications
The MC74HC244ADTG is designed for use in various bus-oriented systems, including:
- 3-state memory address drivers
- Clock drivers
- Level conversion for interfacing TTL or NMOS outputs to High-Speed CMOS inputs
- General-purpose buffering and line driving in digital systems
Q & A
- What is the operating voltage range of the MC74HC244ADTG?
The operating voltage range is from 2.0 to 6.0 V.
- What is the maximum propagation delay of the MC74HC244ADTG?
The maximum propagation delay ranges from 15 to 96 ns, depending on the supply voltage.
- Is the MC74HC244ADTG compatible with TTL outputs?
- What is the maximum output transition time?
The maximum output transition time ranges from 10 to 60 ns, depending on the supply voltage.
- Is the MC74HC244ADTG RoHS compliant?
- What are the package options for the MC74HC244ADTG?
The device is available in a TSSOP-20 package.
- What is the maximum input capacitance of the MC74HC244ADTG?
The maximum input capacitance is 10 pF.
- Can the MC74HC244ADTG be used in automotive applications?
- What is the thermal resistance of the MC74HC244ADTG?
The thermal resistance details can be found in the datasheet, but it generally depends on the package and environmental conditions.
- How many inputs and outputs does the MC74HC244ADTG have?
The device has 8 data input pins and 8 noninverting output pins.
