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CH440R

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WCH Jiangsu Qin Heng Analog Switches, Multiplexers, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CH440R

WCH Jiangsu Qin Heng · Analog Switches, Multiplexers · TSSOP-16

CH440R from WCH Jiangsu Qin Heng, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN input Two-to-one analog switch select input: high selects the 2# side (S2x) and low selects the 1# side (S1x).
2 S1A passive Analog switch 1# terminal for channel A, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute.
3 S2A passive Analog switch 2# terminal for channel A, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute.
4 DA passive Common terminal of the channel A 2:1 analog switch, connected to S1A or S2A depending on IN while EN# is low.
5 S1B passive Analog switch 1# terminal for channel B, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute.
6 S2B passive Analog switch 2# terminal for channel B, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute.
7 DB passive Common terminal of the channel B 2:1 analog switch, connected to S1B or S2B depending on IN while EN# is low.
8 GND power_in Common ground and reference for digital signals; the datasheet requires a good ground connection to limit interference.
9 DC passive Common terminal of the channel C 2:1 analog switch, connected to S1C or S2C depending on IN while EN# is low.
10 S2C passive Analog switch 2# terminal for channel C, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute.
11 S1C passive Analog switch 1# terminal for channel C, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute.
12 DD passive Common terminal of the channel D 2:1 analog switch, connected to S1D or S2D depending on IN while EN# is low.
13 S2D passive Analog switch 2# terminal for channel D, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute.
14 S1D passive Analog switch 1# terminal for channel D, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute.
15 EN# input Active-low global enable; when high, all four channels are disconnected regardless of IN.
16 VCC power_in Positive supply; the 5V-rated part operates at 4.0 to 5.5 V (absolute maximum -0.5 to 6.5 V) and must be decoupled per the datasheet.

Key specifications

Parameter Value
Manufacturer WCH Jiangsu Qin Heng
Package TSSOP-16
Category Interface
Pins 16

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
模拟开关工作环境温度 TA TA -40 85 ℃ 8
存储环境温度 TS TS -55 125 ℃ 8
5V 芯片电源电压 VCC/VDD VCC -0.5 6.5 V 5V 芯片，VCC/VDD 接电源，GND 接地 8
数字或模拟输入/输出引脚电压 VIO VIO -0.5 V 8
模拟开关连续通过电流 Isw Isw 0 30 mA 8
所有模拟开关连续通过电流总和 Iall Iall 0 120 mA 8
VCC/VDD 电源电压 (5V 额定) VCC 4 5 5.5 V TA=25℃, VCC=VDD=5V 8
静态电源电流 ICC ICC 0.1 10 uA TA=25℃, VCC=VDD=5V, 所有数字引脚接 VCC 或 GND 8
静态电源电流 ICCX ICCX 0.5 2 mA TA=25℃, VCC=VDD=5V, 所有数字引脚 3.4V 8
数字引脚低电平输入电压 VIL VIL 0 1 V TA=25℃, VCC=VDD=5V 8
数字引脚高电平输入电压 VIH VIH 2 V TA=25℃, VCC=VDD=5V 8
数字引脚输入泄漏电流 ILEAK ILEAK 0.1 10 uA TA=25℃, VCC=VDD=5V 8
模拟开关关闭状态泄漏电流 IOFF IOFF -1 0.01 1 uA TA=25℃, VCC=VDD=5V 8
推荐的模拟信号电压范围 VANA VANA 0 2.8 V TA=25℃, VCC=VDD=5V 8
允许的模拟信号电压范围 VANAX VANAX -0.3 V TA=25℃, VCC=VDD=5V 8
模拟开关导通电阻 RON1 RON1 4 6 Ω TA=25℃, VCC=VDD=5V, 模拟信号电压为 0V 8
模拟开关导通电阻 RON2 RON2 5 8 Ω TA=25℃, VCC=VDD=5V, 模拟信号电压为 2V 8
模拟开关导通电阻 RON3 RON3 11 16 Ω TA=25℃, VCC=VDD=5V, 模拟信号电压为 3.4V 8
模拟开关导通电阻 RON4 RON4 8 12 Ω TA=25℃, VCC=VDD=5V, 模拟信号电压为 5V 8
VCC/VDD 电源电压 (5V 芯片以 3.3V 工作) VCC3 2.1 3.3 3.9 V TA=25℃, VCC=VDD=3.3V 9
静态电源电流 ICC3 ICC3 0.1 5 uA TA=25℃, VCC=VDD=3.3V, 所有数字引脚接 VCC 或 GND 9
静态电源电流 ICCX3 ICCX3 0.3 1 mA TA=25℃, VCC=VDD=3.3V, 所有数字引脚 2.3V 9
数字引脚低电平输入电压 VIL3 VIL3 0 0.7 V TA=25℃, VCC=VDD=3.3V 9
数字引脚高电平输入电压 VIH3 VIH3 1.8 V TA=25℃, VCC=VDD=3.3V 9
数字引脚输入泄漏电流 ILEAK3 ILEAK3 0.1 5 uA TA=25℃, VCC=VDD=3.3V 9
模拟开关关闭状态泄漏电流 IOFF3 IOFF3 -0.5 0.005 0.5 uA TA=25℃, VCC=VDD=3.3V 9
推荐的模拟信号电压范围 VANA3 VANA3 0 1.5 V TA=25℃, VCC=VDD=3.3V 9
允许的模拟信号电压范围 VANAX3 VANAX3 -0.3 V TA=25℃, VCC=VDD=3.3V 9
模拟开关导通电阻 RON1 (3.3V) RON1 5 9 Ω TA=25℃, VCC=VDD=3.3V, 模拟信号电压为 0V 9
模拟开关导通电阻 RON2 (3.3V) RON2 9 14 Ω TA=25℃, VCC=VDD=3.3V, 模拟信号电压为 1.2V 9
模拟开关导通电阻 RON3 (3.3V) RON3 23 30 Ω TA=25℃, VCC=VDD=3.3V, 模拟信号电压为 2.0V 9
模拟开关导通电阻 RON4 (3.3V) RON4 10 15 Ω TA=25℃, VCC=VDD=3.3V, 模拟信号电压为 3.3V 9
数字输入引脚电容 CIN CIN 4 8 pF TA=25℃, VCC=VDD=5V, F=1MHz 9
开关关闭时模拟信号引脚电容 COFF COFF 6 10 pF TA=25℃, VCC=VDD=5V, F=1MHz 9
开关导通时模拟信号引脚电容 CON CON 9 14 pF TA=25℃, VCC=VDD=5V, F=1MHz 9
模拟开关-3dB 带宽 BW BW 400 550 MHz TA=25℃, VCC=VDD=5V 9
模拟开关开启延时 TON TON 3 7 nS TA=25℃, VCC=VDD=5V, RL=75Ω, CL=10pF, VANA=0V 9
模拟开关关闭延时 TOFF TOFF 2 7 nS TA=25℃, VCC=VDD=5V, RL=75Ω, CL=10pF, VANA=0V 9

CAD (KiCad official)

  • Symbol: CH440R
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: ch440r-etched.step / ch440r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ch440r.step / ch440r.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: WCH Jiangsu Qin Heng datasheet (16 pp, sha256 6abffb8c7ff17e50, retrieved 2026-10-18, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF