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Product Detailed Parameters
- Description：IC SWITCH SPDT X 1 15OHM SOT23-6
- Series：74LVC
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：SPDT
- Multiplexer/Demultiplexer Circuit：2:01
- On-State Resistance (Max)：15Ohm
- Channel-to-Channel Matching (ΔRon)：100mOhm
- Voltage - Supply, Single (V+)：1.65V ~ 5.5V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：5.7ns, 3.8ns
- -3db Bandwidth：340MHz
- Charge Injection：7pC
- Channel Capacitance (CS(off), CD(off))：5.2pF
- Current - Leakage (IS(off)) (Max)：1µA
- Crosstalk：-54dB @ 10MHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6
- Supplier Device Package：SOT-23-6
- Number of Circuits：1
- Grade：-
- Qualification：-
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Overview
The SN74LVC1G3157DBVR is a single-channel, single-pole double-throw (SPDT) analog switch manufactured by Texas Instruments. It operates within a supply voltage range of 1.65V to 5.5V and supports rail-to-rail signal handling for both analog and digital signals. The device features a low ON-state resistance, typically 6Ω at VCC = 4.5V, and an operating frequency of approximately 340MHz. It provides high-speed switching with propagation delays as low as 0.3ns at 5V. The component includes robust ESD protection exceeding 2000V via the Human Body Model and 1000V via the Charged-Device Model. It is housed in a 6-pin SOT-23 package.
Feature Summary
- Supports rail-to-rail signal transmission for both analog and digital applications
- Features specified break-before-make switching to prevent signal overlap
- Provides high electrostatic discharge protection exceeding standard industry limits
- Ensures latch-up performance exceeds 100mA per JESD 78, class II
Applications
- Wearables and mobile devices
- Audio signal routing
- I2C/SPI/UART bus multiplexing
- Portable medical equipment
- Remote radio units
Procurement Notes
Verify the specific ordering suffix 'DBVR' corresponds to the SOT-23 package and tape-and-reel packaging configuration. Confirm that the intended application environment remains within the recommended operating temperature range of -40°C to 85°C or 125°C depending on the exact thermal constraints. Ensure input signals are not applied before the VCC supply has ramped to the required logic threshold levels to maintain proper device operation.
Selection Notes
Select this component when a single SPDT analog switch is required for low-voltage systems operating between 1.65V and 5.5V. It is suitable for applications demanding rail-to-rail signal integrity and high-speed data routing. Consider the SOT-23 package dimensions for space-constrained designs. Verify that the maximum ON-state resistance and leakage current specifications meet the requirements of the specific signal path being implemented.
Part Context
This device belongs to the SN74LVC1G3157 family of SPDT analog switches from Texas Instruments. The family shares identical electrical characteristics and functional logic but differs in physical packaging options such as SC70, SON, X2SON, and DSBGA. The DBVR suffix specifically identifies the SOT-23 surface-mount variant with reel packaging, ensuring compatibility with standard automated assembly processes.
Replacement Considerations
SN74LVC1G3157DCKR: Identical electrical specifications housed in a SC70-6 package.
FAQ
How does the control input determine the active channel?
When the Select (S) pin is held low, the B1 channel is activated. When the Select pin is held high, the B2 channel is activated.
What is the maximum signal amplitude supported by the device?
The device handles signals with amplitudes up to VCC (peak), allowing for full rail-to-rail signal transmission regardless of the supply voltage level.
Does the device support simultaneous connection of both output channels?
No, the SN74LVC1G3157 is designed with specified break-before-make switching, ensuring that one channel disconnects before the other connects, preventing simultaneous activation.
