Overview
The MC74HC259ADTR2G, produced by onsemi, is a high-performance silicon-gate CMOS 8-bit addressable latch and 1-of-8 decoder. This device is identical in pinout to the LS259 and is designed to operate in four distinct modes: addressable latch, memory, one-of-eight decoding or demultiplexing, and reset. The inputs are compatible with standard CMOS outputs and, with pull-up resistors, can also be compatible with LSTTL outputs. This component is part of the HC series, known for its low power consumption and high noise immunity, making it suitable for a wide range of digital logic applications.
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 |
| Minimum High-Level Input Voltage (VIH) | 1.5 to 4.2 | V |
| Maximum Low-Level Input Voltage (VIL) | 0 to 1.5 | V |
| Maximum Propagation Delay, Data to Output | 25 to 125 ns | ns |
| Maximum Propagation Delay, Address Select to Output | 28 to 175 ns | ns |
| Maximum Propagation Delay, Enable to Output | 28 to 175 ns | ns |
| Maximum Propagation Delay, Reset to Output | 19 to 160 ns | ns |
| Operating Free-Air Temperature | −55 to +125 | °C |
| Output Drive Capability | 10 LSTTL Loads | |
| Maximum Input Capacitance | 10 pF | pF |
Key Features
- High-performance silicon-gate CMOS technology
- Four modes of operation: addressable latch, memory, one-of-eight decoding or demultiplexing, and reset
- Inputs compatible with standard CMOS outputs and LSTTL outputs with pull-up resistors
- Output drive capability of 10 LSTTL loads
- Directly interfaces with CMOS, NMOS, and TTL
- Low input current of 1 μA
- High noise immunity characteristic of CMOS devices
- 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
- Digital logic circuits requiring addressable latches and decoders
- Automotive systems due to its AEC-Q100 qualification
- Industrial control systems where high noise immunity is crucial
- Communication systems requiring low power consumption and high reliability
- Embedded systems and microcontrollers needing versatile logic functions
Q & A
- What are the four modes of operation for the MC74HC259ADTR2G?
The four modes are addressable latch, memory, one-of-eight decoding or demultiplexing, and reset.
- What is the operating voltage range for the MC74HC259ADTR2G?
The operating voltage range is 2.0 to 6.0 V.
- How many LSTTL loads can the MC74HC259ADTR2G drive?
The device can drive up to 10 LSTTL loads.
- Is the MC74HC259ADTR2G compatible with LSTTL outputs?
Yes, with pull-up resistors, the inputs are compatible with LSTTL outputs.
- What is the maximum propagation delay from data to output?
The maximum propagation delay from data to output ranges from 25 to 125 ns depending on the VCC voltage.
- What is the operating temperature range for the MC74HC259ADTR2G?
The operating free-air temperature range is −55 to +125 °C.
- Is the MC74HC259ADTR2G RoHS compliant?
Yes, the device is Pb-free, halogen-free, and RoHS compliant.
- What is the maximum input capacitance of the MC74HC259ADTR2G?
The maximum input capacitance is 10 pF.
- Can the MC74HC259ADTR2G be used in automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other applications requiring unique site and control change requirements.
- What package types are available for the MC74HC259ADTR2G?
The device is available in TSSOP-16 packages.
