Product Overview
The Nexperia HEF4053BT,652 is a triple single-pole double-throw (SPDT) analog switch, also known as a triple 2-channel multiplexer/demultiplexer. It is fabricated using CMOS technology to provide low power consumption, high noise immunity, and wide operating voltage ranges. Designed for both analog and digital signal routing, it enables flexible signal switching in a broad range of applications including data acquisition systems, instrumentation, and multiplexed sensor interfaces.
Functionality
Each of the three analog switches in the HEF4053BT,652 has two selectable inputs/outputs (Y0 and Y1) and one common input/output (Z). The selection is controlled by individual digital control inputs (Sn). The switch operates symmetrically and bi-directionally, making it suitable for routing analog or digital signals in either direction. An enable input (E) disables all switches when pulled high, effectively disconnecting all signal paths.
Key Features
* Triple 2-channel multiplexer/demultiplexer configuration
* Wide analog input voltage range: 0 V to VDD
* Control input levels compatible with standard CMOS logic
* High linearity and low ON-resistance
* Rail-to-rail signal handling capability
* Low "off" leakage current for accurate signal isolation
* Latch-up performance compliant with JEDEC standards
Electrical Specifications
* Supply Voltage Range (VDD): 3 V to 15 V
Supports a wide operating range for compatibility with both low- and high-voltage systems.
* Analog Signal Range: 0 V to VDD
Allows full rail-to-rail analog signal routing without clamping.
* ON-Resistance (RON):
* Typically 180 Ω at VDD = 5 V
* Typically 75 Ω at VDD = 10 V
* Typically 50 Ω at VDD = 15 V
ON-resistance is flat over a wide input range, making the part suitable for precision applications.
* OFF-State Leakage Current (IOFF): ±100 nA max
Ensures minimal signal crosstalk and leakage when switches are off.
* ON-State Leakage Current (ION): ±100 nA max
Provides predictable analog behavior and minimal current error.
* Propagation Delay (tpd):
* ~30 ns at VDD = 10 V
Ensures fast switching in timing-sensitive applications.
* Control Input Logic Thresholds (VIL, VIH):
CMOS-compatible logic levels depending on supply voltage.
* Input Capacitance: ~5 pF typical
Ensures fast response with low signal degradation.
Thermal and Mechanical Characteristics
* Package Type: TSSOP-16 (Thin Shrink Small Outline Package)
* Compact footprint ideal for space-constrained designs
* Thermal resistance (junction-to-ambient): ~110 °C/W typical
* Temperature Range: –40°C to +125°C
Designed for robust operation across automotive and industrial environments.
* ESD Protection:
All terminals are protected against electrostatic discharge in accordance with JESD22-A114 (HBM class 2 or better).
Logic Control and Enable Function
* Channel Selection Inputs (S1, S2, S3):
Each switch is controlled independently by a dedicated digital input.
* Enable Input (E):
When high, disconnects all switch channels (hi-Z state). Active low to enable switching operation.
* Logic control allows for dynamic signal routing under digital control, suitable for microcontroller- or FPGA-based systems.
Typical Applications
* Signal multiplexing in data acquisition systems
* Audio routing in multimedia and communication systems
* Sensor signal selection in embedded systems
* Digital and analog test systems
* Power management signal switching
* Automotive control modules (e.g., sensor banks, diagnostics)
Design Considerations
Due to its low on-resistance and high linearity, the HEF4053BT,652 is suitable for routing low-level analog signals without significant distortion. Designers should ensure that input signals do not exceed VDD or go below ground to avoid damage or signal clipping. The enable and select lines should be driven by clean CMOS-level logic to ensure reliable operation.
Careful PCB layout is recommended to minimize parasitic capacitance and crosstalk, especially in high-frequency analog applications. Decoupling capacitors should be placed near the power supply pins to suppress supply noise.
Conclusion
The Nexperia HEF4053BT,652 is a versatile and robust analog switch offering excellent performance in signal routing, with wide voltage support, low on-resistance, and high switching speed. Its triple SPDT configuration makes it ideal for compact systems requiring efficient and reliable analog or digital multiplexing. The device's low power operation and high noise immunity make it well-suited for use in precision analog circuits, communication devices, and industrial control equipment.
