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Product Detailed Parameters
- Description：ANALOG MULTIPLEXER/DEMULTIPLEXER
- Series：74HC
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：SP8T - Open/Closed
- Multiplexer/Demultiplexer Circuit：8:01
- On-State Resistance (Max)：400Ohm
- Channel-to-Channel Matching (ΔRon)：60Ohm (Max)
- Voltage - Supply, Single (V+)：2V ~ 6V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：-
- -3db Bandwidth：-
- Charge Injection：-
- Channel Capacitance (CS(off), CD(off))：40pF, 40pF
- Current - Leakage (IS(off)) (Max)：100nA
- Crosstalk：-
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-VFQFN Exposed Pad
- Supplier Device Package：16-QFN (2.5x3.5)
- Number of Circuits：1
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The MC74HC4851AMN1TWG-Q is an automotive-grade analog multiplexer/demultiplexer manufactured by onsemi. It features injection current effect control, allowing disabled channel signals to exceed the supply voltage without affecting the enabled channel. The device operates within a DC supply voltage range of 2.0 V to 6.0 V and supports an operating temperature from -55°C to +125°C. It utilizes low power silicon gate CMOS technology and is housed in a QFN-16 package (2.5x3.5 mm). Key electrical parameters include a maximum ON resistance of 400 Ω at 6.0 V, propagation delays ranging from 30 ns to 160 ns depending on voltage, and input capacitance of 10 pF for digital pins.
Feature Summary
- Injection current cross-coupling less than 1 mV/mA
- Pin compatible with HC405X and MC1405XB devices
- AEC-Q100 qualified and PPAP capable
Applications
- Automotive applications requiring unique site and control change requirements
- Systems where voltages in excess of normal logic voltage are common
- Analog signal routing in microcontroller A/D input circuits
Procurement Notes
Verify the specific ordering suffix '-Q' confirms automotive qualification and PPAP capability as documented in the datasheet. Confirm the 'MN1T' suffix corresponds to the QFN-16 tape and reel packaging format. Ensure compliance with RoHS and lead-free requirements specified for this component variant.
Selection Notes
Select this component when injection current protection is required to eliminate external diode/resistor networks. Compare against standard HC4051 devices if voltage excursions on disabled channels are expected. Verify that the 2.0 V to 6.0 V supply range meets system requirements and that the QFN-16 package fits the PCB layout constraints.
Part Context
This part belongs to the MC74HC4851A family of analog multiplexers. It shares functional compatibility with the standard 74HC4851 but includes the '-Q' suffix indicating automotive grade qualification. The device is designed to replace older MC1405xB series parts while offering improved performance regarding injection current effects.
Replacement Considerations
Direct pin-compatible replacements include the MC74HC4851ADWR2G and MC74HC4851ADTR2G. Note that these alternatives may lack the '-Q' automotive qualification suffix unless explicitly ordered. Standard HC4051 devices are functionally similar but lack injection current protection.
