Overview
The MC74HC244ADTR2G is an octal 3-state noninverting buffer/line driver/line receiver produced by onsemi. This device is part of the HC series 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 MC74HC244ADTR2G is available in a TSSOP-20 package and is Pb-free, halogen-free, and RoHS compliant.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| DC Supply Voltage (VCC) | 2.0 | 6.0 | V |
| DC Input Voltage (VIN) | -0.5 | VCC + 0.5 | V |
| DC Output Voltage (VOUT) | -0.5 | VCC + 0.5 | V |
| Operating Free-Air Temperature (TA) | -55 | 125 | °C |
| Input Rise or Fall Time (tr, tf) | 0 | 1000 (at VCC = 2.0 V), 500 (at VCC = 4.5 V), 400 (at VCC = 6.0 V) | ns |
| Maximum Propagation Delay (tPLH, tPHL) | 15 (at VCC = 6.0 V) | 96 (at VCC = 2.0 V) | ns |
| Maximum Output Transition Time (tTLH, tTHL) | 10 (at VCC = 6.0 V) | 60 (at VCC = 2.0 V) | ns |
| Maximum Input Capacitance (CIN) | - | 10 | pF |
| Maximum Three-State Output Capacitance (COUT) | - | 15 | 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
- 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
- 3-state memory address drivers
- Clock drivers
- Bus-oriented systems
- Level conversion for interfacing TTL or NMOS outputs to High-Speed CMOS inputs
Q & A
- What is the operating voltage range of the MC74HC244ADTR2G?
The operating voltage range is from 2.0 V to 6.0 V.
- What is the maximum propagation delay for the MC74HC244ADTR2G?
The maximum propagation delay is 96 ns at VCC = 2.0 V and 15 ns at VCC = 6.0 V.
- What is the input current of the MC74HC244ADTR2G?
The maximum input leakage current is 1 μA.
- Is the MC74HC244ADTR2G compatible with TTL outputs?
Yes, the MC74HC244ADTR2G is compatible with TTL outputs, especially the MC74HCT244A version.
- What are the package options for the MC74HC244ADTR2G?
The device is available in a TSSOP-20 package.
- Is the MC74HC244ADTR2G RoHS compliant?
Yes, the device is Pb-free, halogen-free, and RoHS compliant.
- What is the maximum output transition time for the MC74HC244ADTR2G?
The maximum output transition time is 60 ns at VCC = 2.0 V and 10 ns at VCC = 6.0 V.
- Can the MC74HC244ADTR2G be used in automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements.
- What is the thermal resistance of the MC74HC244ADTR2G?
The thermal resistance details are provided in the data sheet, but it generally depends on the package and environmental conditions.
- How many inputs and outputs does the MC74HC244ADTR2G have?
The device has 8 data input pins and 8 noninverting output pins, along with two active-low output enables.
