SN74HC4851N

$0.48

Description：IC MUX 8:1 195OHM 16DIP
Series：-

SKU:86f7c5f69b0a Category: Analog Switches, Multiplexers, Demultiplexers Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC MUX 8:1 195OHM 16DIP
Series：-
Mfr：Texas Instruments
Package：Bulk,Tube
Switch Circuit：-
Multiplexer/Demultiplexer Circuit：8:01
On-State Resistance (Max)：195Ohm
Channel-to-Channel Matching (ΔRon)：3Ohm
Voltage - Supply, Single (V+)：2V ~ 6V
Voltage - Supply, Dual (V±)：-
Switch Time (Ton, Toff) (Max)：78ns, 78ns
-3db Bandwidth：-
Charge Injection：-
Channel Capacitance (CS(off), CD(off))：22pF
Current - Leakage (IS(off)) (Max)：200nA
Crosstalk：-
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Through Hole
Package / Case：16-DIP (0.300", 7.62mm)
Supplier Device Package：16-PDIP
Number of Circuits：1
Grade：-
Qualification：-

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SN74HC4851N

Overview

The SN74HC4851N is an eight-channel CMOS analog multiplexer/demultiplexer manufactured using silicon gate CMOS technology. It features injection-current effect control, allowing signals at disabled channels to exceed the supply voltage without affecting the enabled channel. The device operates with a single power supply ranging from 2V to 5.5V. It provides low on-state resistance and fast switching capabilities. The component is housed in a 16-pin PDIP package and supports an operating temperature range from -40°C to 125°C.

Feature Summary

Injection-current effect control prevents signal interference when disabled channel voltages exceed the supply range.
Terminal compatibility with standard '4051 series devices simplifies design upgrades.
Low crosstalk between switches ensures signal integrity during multiplexing operations.

Applications

Analog and digital multiplexing and demultiplexing
Diagnostics and monitoring systems
Data center switch infrastructure
Remote radio unit (RRU) applications
Electricity metering equipment

Procurement Notes

Verify the specific ordering suffix to confirm the package type, as the base model number applies to multiple packages including SOIC, TSSOP, and PDIP. Confirm RoHS compliance status and lead finish details via the manufacturer's latest packaging addendum. Ensure the selected variant matches the required thermal and moisture sensitivity ratings for the intended assembly process.

Selection Notes

Select this component when high-voltage signals on inactive channels must not disturb active paths. The injection-current control eliminates the need for external diode-resistor networks typically required by standard multiplexers. Verify that the supply voltage range of 2V to 5.5V aligns with the system logic levels and that the 16-pin PDIP package fits the mechanical constraints.

Part Context

This device belongs to the Texas Instruments HC4851 family of analog multiplexers. It serves as a functional replacement for legacy '4051 devices while offering enhanced protection against injection currents. The family includes automotive-qualified variants and different package options such as SOIC and TSSOP for surface mount applications.

Replacement Considerations

The SN74HC4851N is terminal compatible with SN74HC4051, SN74LV4051A, and CD4051B devices. Designers can often substitute these parts directly if pinout compatibility is confirmed. Verify that the replacement part meets the specific injection-current requirements of the application.

FAQ

How does the injection-current effect control benefit automotive applications?

It allows signals at disabled input channels to exceed the normal supply voltage range without affecting the signal of the enabled analog channel, which is common in automotive environments.