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Product Detailed Parameters
- Description：IC MUX 8:1 195OHM 16TVSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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-TFSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-TVSOP
- Number of Circuits：1
- Grade：-
- Qualification：-
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Overview
The SN74HC4851DGVR is an eight-channel CMOS analog multiplexer/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 5.5V and features injection-current effect control, allowing signals at disabled channels to exceed the supply voltage without affecting enabled channels. The device is housed in a 16-pin TVSOP package with dimensions of 5mm x 6.4mm. Key electrical parameters include a maximum on-state resistance (Ron) of 670Ω at 2V and 345Ω at 3.3V, off-state leakage current (IS(OFF)) of ±1µA at 5V, and propagation delay (tPD) of 18.5ns at 3.3V. It 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 voltage.
- Terminal compatible with SN74HC4051, SN74LV4051A, and CD4051B devices for direct pin-to-pin replacement.
- Low crosstalk between switches ensures high signal integrity during analog and digital multiplexing operations.
Applications
- Analog and digital multiplexing and demultiplexing
- Diagnostics and monitoring systems
- Data center switch infrastructure
- Remote radio unit (RRU) applications
- Electricity metering
Procurement Notes
Verify the specific ordering suffix 'DGVR' corresponds to the TVSOP-16 package and tape-and-reel quantity of 2000 units. Confirm that the component status is listed as active or NRND depending on long-term availability requirements. Ensure the datasheet revision matches the design specifications, particularly regarding absolute maximum ratings and thermal metrics.
Selection Notes
Select this component when system designs require handling input signals exceeding the VCC rail on unselected channels without external protection diodes. Compare the on-state resistance and propagation delay against the SN74HC4051 to determine if the injection-current control feature justifies the selection for automotive or industrial environments.
Part Context
This part belongs to the SN74HC485x family of analog multiplexers. It serves as a functional upgrade to the standard SN74HC4051 by integrating internal circuitry to manage injection currents. The DGVR suffix specifically denotes the Thin-shrink small-outline package variant designed for surface-mount assembly.
Replacement Considerations
The SN74HC4851DGVR is terminal compatible with the SN74HC4051, SN74LV4051A, and CD4051B. These parts can be used as direct replacements where injection-current control is not required. Verify package compatibility when substituting with other variants like the SN74HC4851PW.
FAQ
How does the injection-current effect control benefit the circuit?
It allows signals at disabled analog input channels to exceed the supply voltage without affecting the signal of the enabled analog channel, eliminating the need for external diode/resistor networks.
What is the maximum supply voltage for this device?
The recommended operating supply voltage (VCC) ranges from 2V to 5.5V.
Is this device suitable for automotive applications?
Yes, the datasheet notes that the injection-current effect control has excellent value in automotive applications where voltages in excess of normal supply voltages are common.
