Overview
The MC74HC157ADR2G is a quad 2-input data selector/multiplexer produced by onsemi. This device is designed to route two nibbles (A or B) to a single port (Y) based on the Select input. It is compatible with standard CMOS outputs and, with pull-up resistors, can also interface with LSTTL outputs. The MC74HC157ADR2G is part of the HC157 series, known for its high noise immunity and compliance with JEDEC Standard No. 7A.
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), 400 (at VCC = 6.0 V) | ns |
| Maximum Propagation Delay (tPLH, tPHL) | 105 (at VCC = 2.0 V), 18 (at VCC = 6.0 V) | ns | |
| Maximum Output Transition Time (tTLH, tTHL) | 75 (at VCC = 2.0 V), 13 (at VCC = 6.0 V) | ns | |
| Maximum Input Capacitance (Cin) | 10 | pF |
Key Features
- Output Drive Capability: 10 LSTTL Loads
- Outputs Directly Interface to CMOS, NMOS, and TTL
- Operating Voltage Range: 2.0 to 6.0 V
- 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: 82 FETs or 20.5 Equivalent Gates
- Pb-Free, Halogen Free/BFR Free and RoHS Compliant
- AEC-Q100 Qualified and PPAP Capable for Automotive and Other Applications Requiring Unique Site and Control Change Requirements
Applications
The MC74HC157ADR2G is suitable for a variety of applications where data selection and multiplexing are required. These include:
- Digital Switching Circuits
- Data Routing and Selection in Digital Systems
- Automotive Electronics (due to AEC-Q100 qualification)
- Industrial Control Systems
- Communication Equipment
Q & A
- What is the primary function of the MC74HC157ADR2G?
The primary function is to route two nibbles (A or B) to a single port (Y) based on the Select input.
- What is the operating voltage range of the MC74HC157ADR2G?
The operating voltage range is from 2.0 to 6.0 V.
- How many LSTTL loads can the outputs of the MC74HC157ADR2G drive?
The outputs can drive up to 10 LSTTL loads.
- Is the MC74HC157ADR2G compatible with CMOS and TTL outputs?
- What is the maximum propagation delay for the MC74HC157ADR2G at VCC = 6.0 V?
The maximum propagation delay is 18 ns.
- Is the MC74HC157ADR2G RoHS compliant?
- What are the package options available for the MC74HC157ADR2G?
The device is available in SOIC-16 and TSSOP-16 packages.
- Is the MC74HC157ADR2G suitable for automotive applications?
- What is the maximum input capacitance of the MC74HC157ADR2G?
The maximum input capacitance is 10 pF.
- How does the Output Enable input affect the outputs of the MC74HC157ADR2G?
A high level on the Output Enable input sets all four Y outputs to a low level.
