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Product Detailed Parameters
- Description：IC MUX 8:1 195OHM 16SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- 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：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Number of Circuits：1
- Grade：-
- Qualification：-
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Overview
The SN74HC4851DR is an eight-channel CMOS analog multiplexer/demultiplexer manufactured by Texas Instruments in a 16-pin SOIC package. It operates within a supply voltage range of 2V to 5.5V and supports signal path voltages from 0V to VCC. The device features injection-current effect control, limiting cross-coupling to less than 1mV/mA when injected current is under 1mA. Electrical characteristics include a maximum on-state resistance (Ron) of 360Ω at 3V and 125°C, with propagation delays (tPD) reaching a maximum of 32ns at 2V. It provides latch-up performance exceeding 100mA per JESD 78, Class II standards.
Feature Summary
- Injection-current effect control prevents disabled channel signals from affecting enabled channels
- Terminal compatible with SN74HC4051, SN74LV4051A, and CD4051B devices
- Low crosstalk between switches for accurate signal routing
- Latch-up protection exceeds 100mA per JESD 78, Class II
Applications
- Analog and digital multiplexing and demultiplexing
- Data center switch systems
- Remote radio unit (RRU) configurations
- Electricity meter monitoring
- String inverter circuits
Procurement Notes
Verify the specific ordering suffix against the manufacturer's Package Option Addendum to confirm the exact physical package type and manufacturing status. The 'DR' suffix indicates production status in an SOIC package, but availability may vary. Confirm RoHS compliance and lead finish details directly from the latest orderable information documentation provided by Texas Instruments before finalizing procurement.
Selection Notes
Select this component when terminal compatibility with legacy '4051 devices is required alongside modern injection-current suppression capabilities. Ensure the application voltage stays within the 2V to 5.5V operating range. Consider the maximum on-state resistance values at the specific operating temperature if signal integrity across high-impedance sources is critical for the design requirements.
Part Context
This part belongs to the SN74HC4851 family of 8-channel analog multiplexers. While the standard SN74HC4851 is designed for general industrial use, automotive-grade variants such as the SN74HC4851-Q1 exist for high-reliability applications. The DR variant specifically denotes the surface-mount SOIC packaging option within this broader product line.
Replacement Considerations
The datasheet explicitly lists SN74HC4051, SN74LV4051A, and CD4051B as terminal-compatible replacements. Note that these alternatives lack the integrated injection-current effect control feature found in the SN74HC4851, potentially requiring external passive components to manage voltage excursions.
