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CH446Q, in 3D

CH446Q

WCH (Nanjing Qinheng Microelectronics)

-40℃~+85℃ -7V、4V~12V、5V 128 12ns 25pF 45Ω 50MHz LQFP-44(10x10) Analog Switches, Multiplexers ROHS

Extended
DatasheetJLCPCBLCSCwch/CH446Q
Category
Analog Switches, Multiplexers
Package
LQFP-44(10x10)
Pins
44

Overview

The CH446Q is an analog Switches, Multiplexer made by WCH (Nanjing Qinheng Microelectronics) in a LQFP-44(10x10) package with 44 pins. -40℃~+85℃ -7V、4V~12V、5V 128 12ns 25pF 45Ω 50MHz LQFP-44(10x10) Analog Switches, Multiplexers ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:CH446Q, from EasyEDA) and its footprint (Package_QFP:LQFP-44_10x10mm_P0.8mm, from KiCad's library), ready for a KiCad board. 1,054 are in stock at JLCPCB (part C109471). 6 open-source boards in 4 repositories on GitHub use it.

Symbol

X141X152X63X74X85X96X107X118NC9P/-S10Y711GND12Y613STB14Y515VEE16Y417AX118AX219AY020AY121NC22NC23X1324X1225X526X427X328X229X130X031NC32Y033CS/SK34Y135DAT36Y237VDD38Y339AY240RST41AX342AX043NC44
EasyEDA_Cloud:CH446QFrom EasyEDA

Footprint

1234567891011121314151617181920212223242526272829303132333435363738394041424344
Package_QFP:LQFP-44_10x10mm_P0.8mmFrom KiCad's library

From the datasheet

9
Supply, least
4 V · VDD, recommended operating min, GND=0V and VDD−VEE<13.2V · p. 6
Supply, most
13.2 V · VDD, recommended operating max, GND=0V and VDD−VEE<13.2V · p. 6
Supply, least
8.8 V · VEE, recommended operating min, VDD−VEE<13.2V · p. 6
Supply, absolute maximum
16 V · VDD, absolute max, VEE=GND=0V · p. 6
Supply, absolute maximum
500 mV · VEE, absolute max, VDD=GND=0V · p. 6
Works from
-40 °C · operating ambient min · p. 6
Works up to
85 °C · operating ambient max · p. 6
Takes working
1 µA · typical quiescent supply current, VDD=12V, digital pins at VDD or GND · p. 6
A pin gives at most
15 mA · max continuous current through each analog switch · p. 6

What it is and has

6
Analog switch matrix
128 independent switches, 8x16 signal channels · p. 1
Parallel address input
7-bit · p. 1
Serial address input
Serial shift input · p. 1
On resistance
65Ω maximum at 12V supply difference; switch resistance difference ≤10Ω · p. 1
Process
CMOS, low static power · p. 1
Package and compliance
Lead-free LQFP-44, RoHS compatible; PLCC44 adapter board available · p. 1

Around it

1
cap unspecified
between VDD and GND; Required external decoupling capacitor to reduce interference. · p. 7

Specifications

38
ParameterConditionsAs printedPage
工作时的环境温度 TAmin -40 · max 85 ℃6
储存时的环境温度 TSmin -55 · max 125 ℃6
VDD 电源电压 VDDVEE=GND=0Vmin -0.5 · max 16 V6
VEE 电源电压 VEEVDD=GND=0Vmin -16 · max 0.5 V6
模拟开关的连续通过电流 Iswmin 0 · max 15 mA6
所有模拟开关的连续通过电流的总和 Iallmin 0 · max 100 mA6
VDD 电源电压 VDDGND=0V，VDD 与 VEE 之间电压差小于 13.2Vmin 4 · max 13.2 V6
VEE 电源电压 VEEGND=0V，VDD 与 VEE 之间电压差小于 13.2Vmin -8.8 · max 0 V6
静态电源电流 ICC0TA=25℃，VDD=12V，GND=0V，VEE=0V，模拟开关两端压差 0.4V；所有数字引脚接 VDD 或 GNDtyp 1 · max 100 uA6
静态电源电流 ICC5TA=25℃，VDD=5V，GND=0V，VEE=0V，模拟开关两端压差 0.4V；所有数字引脚 2.4Vtyp 0.4 · max 1.5 mA6
静态电源电流 ICC12TA=25℃，VDD=12V，GND=0V，VEE=0V，模拟开关两端压差 0.4V；所有数字引脚 3.4Vtyp 5 · max 15 mA6
数字引脚低电平输入电压 VILTA=25℃，VDD-GND=5V，GND=0V，VEE=0V，模拟开关两端压差 0.4Vmin -0.5 · max 0.8 V6
数字引脚高电平输入电压 VIHTA=25℃，VDD-GND=5V，GND=0V，VEE=0V，模拟开关两端压差 0.4Vmin 2 V6
数字引脚高电平输入电压 VIH12TA=25℃，VDD=12V，GND=0V，VEE=0V，模拟开关两端压差 0.4Vmin 3.3 V6
数字引脚的输入泄漏电流 ILEAKTA=25℃，VDD=12V，GND=0V，VEE=0V，模拟开关两端压差 0.4Vtyp 0.1 · max 10 uA6
模拟开关导通电阻 RON12VDD-VEE=12V，25℃，GND=0V，VEE=0V，模拟开关两端压差 0.4Vtyp 45 · max 65 Ω6
模拟开关导通电阻 RON12TVDD-VEE=12V，85℃，GND=0V，VEE=0V，模拟开关两端压差 0.4Vtyp 55 · max 80 Ω6
模拟开关导通电阻 RON5VDD-VEE=5V，25℃，GND=0V，VEE=0V，模拟开关两端压差 0.4Vtyp 120 · max 185 Ω6
模拟开关导通电阻 RON5TVDD-VEE=5V，85℃，GND=0V，VEE=0V，模拟开关两端压差 0.4Vtyp 150 · max 225 Ω6
多个模拟开关导通电阻差值 △RONTA=25℃，VDD-VEE=12V，GND=0V，VEE=0V，模拟开关两端压差 0.4Vtyp 5 · max 10 Ω6
模拟开关端口的引脚电容 CSWTA=25℃，VDD=5V，GND=0V，VEE=-7V，模拟信号 2Vpp；F=1MHztyp 10 · max 25 pF7
模拟开关馈通电容 CFTTA=25℃，VDD=5V，GND=0V，VEE=-7V，模拟信号 2Vpp；F=1MHztyp 0.5 pF7
模拟开关频率响应 F3DBTA=25℃，VDD=5V，GND=0V，VEE=-7V，模拟信号 2Vpp；3DB，RL=3KΩtyp 50 MHz7
模拟开关信号通过延时 TPSTA=25℃，VDD=5V，GND=0V，VEE=-7V，模拟信号 2Vpp；RL=1KΩ，CL=50pFtyp 12 · max 30 nS7
数字信号输入的引脚电容 CDITA=25℃，VDD=5V，GND=0V，VEE=-7V；F=1MHztyp 7 · max 15 pF7
并行输入地址对 STB 上升沿的建立时间 TPASTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 8 nS7
并行输入地址对 STB 下降沿的保持时间 TPAHTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 6 nS7
DAT 输入地址对 CS/CK 上升沿的建立时间 TASTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 7 nS7
DAT 输入地址对 CS/CK 上升沿的保持时间 TAHTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 3 nS7
DAT 输入数据对 STB 下降沿的建立时间 TDSTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 8 nS7
DAT 输入数据对 STB 下降沿的保持时间 TDHTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 6 nS7
CS/CK 上升沿对 STB 上升沿的建立时间 TCSTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 10 nS7
CS/CK 上升沿对 STB 下降沿的保持时间 TCHTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 7 nS7
CS/CK 时钟信号的低电平宽度 TCKLTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 10 nS7
CS/CK 时钟信号的高电平宽度 TCKHTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 10 nS7
STB 输入高电平有效脉冲的宽度 TSTBTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 10 nS7
RST 输入高电平有效脉冲的宽度 TRSTTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 15 nS7
DAT、STB 或 RST 到模拟开关执行延时 TSWTA=25℃，VDD=5V，GND=0V，VEE=-7Vmin 5 · typ 30 · max 70 nS7

Pins, by the datasheet

42
1 X14
8x16 matrix analog switch X port. · p. 4
2 X15
8x16 matrix analog switch X port. · p. 2
3 X6
8x16 matrix analog switch X port. · p. 4
4 X7
8x16 matrix analog switch X port. · p. 4
5 X8
8x16 matrix analog switch X port. · p. 4
6 X9
8x16 matrix analog switch X port. · p. 4
7 X10
8x16 matrix analog switch X port. · p. 4
8 X11
8x16 matrix analog switch X port. · p. 4
9 NC.
Unused; do not connect. · p. 2
10 P/-S
Address mode selection: high selects parallel input; low selects serial input. · p. 2
11 Y7
8x16 matrix analog switch Y port. · p. 2
12 GND
Common ground and digital signal reference, 0V. · p. 2
14 STB
Active-high strobe pulse input. · p. 2
16 VEE
Negative supply; voltage must be less than or equal to GND. · p. 2
17 Y4
8x16 matrix analog switch Y port. · p. 1
18 AX1
Parallel X-port address input; connect directly to GND in serial mode. · p. 3
19 AX2
Parallel X-port address input; connect directly to GND in serial mode. · p. 4
20 AY0
Parallel Y-port address input; connect directly to GND in serial mode. · p. 2
21 AY1
Parallel Y-port address input; connect directly to GND in serial mode. · p. 3
22 NC.
Unused; do not connect. · p. 2
23 NC.
Unused; do not connect. · p. 2
24 X13
8x16 matrix analog switch X port. · p. 4
25 X12
8x16 matrix analog switch X port. · p. 4
26 X5
8x16 matrix analog switch X port. · p. 4
27 X4
8x16 matrix analog switch X port. · p. 4
28 X3
8x16 matrix analog switch X port. · p. 2
29 X2
8x16 matrix analog switch X port. · p. 1
30 X1
8x16 matrix analog switch X port. · p. 2
31 X0
8x16 matrix analog switch X port. · p. 2
32 NC.
Unused; do not connect. · p. 2
33 Y0
8x16 matrix analog switch Y port. · p. 2
34 CS/CK
Rising-edge serial clock in serial mode; active-high chip select in parallel mode. · p. 2
35 Y1
8x16 matrix analog switch Y port. · p. 3
36 DAT
Serial address and switch data input in serial mode; switch data input in parallel mode, high closes and low opens the selected switch. · p. 2
37 Y2
8x16 matrix analog switch Y port. · p. 2
38 VDD
Positive supply; voltage must be greater than or equal to GND. · p. 2
39 Y3
8x16 matrix analog switch Y port. · p. 5
40 AY2
Parallel Y-port address input; connect directly to GND in serial mode. · p. 2
41 RST
Active-high external manual reset input. · p. 2
42 AX3
Parallel X-port address input; connect directly to GND in serial mode. · p. 2
43 AX0
Parallel X-port address input; connect directly to GND in serial mode. · p. 2
44 NC.
Unused; do not connect. · p. 2

Ordering codes, by the datasheet

1
CH446Q
LQFP-44 · 8x16 matrix, 128 switches, parallel and serial address input; 10*10mm, 0.8mm pin pitch · p. 2

Parameters

11
Bandwidth
50MHz
Con
25pF
Current - Supply
1uA
Features
Control interface integration
Number of Channels
128
Operating Temperature
-40℃~+85℃
Output Current per Pin(Max)
15mA
Propagation Delay (tpd)
12ns
Ron
65Ω@12V
Voltage - Supply
4V~13.2V
Voltage - Supply(Absolute Max)
16V

Order codes

1

Pinout

44
The pins of the CH446Q
PinNameType
1X14Unspecified
2X15Unspecified
3X6Unspecified
4X7Unspecified
5X8Unspecified
6X9Unspecified
7X10Unspecified
8X11Unspecified
9NCUnspecified
10P/-SUnspecified
11Y7Unspecified
12GNDUnspecified
13Y6Unspecified
14STBUnspecified
15Y5Unspecified
16VEEUnspecified
17Y4Unspecified
18AX1Unspecified
19AX2Unspecified
20AY0Unspecified
21AY1Unspecified
22NCUnspecified
23NCUnspecified
24X13Unspecified
25X12Unspecified
26X5Unspecified
27X4Unspecified
28X3Unspecified
29X2Unspecified
30X1Unspecified
31X0Unspecified
32NCUnspecified
33Y0Unspecified
34CS/SKUnspecified
35Y1Unspecified
36DATUnspecified
37Y2Unspecified
38VDDUnspecified
39Y3Unspecified
40AY2Unspecified
41RSTUnspecified
42AX3Unspecified
43AX0Unspecified
44NCUnspecified

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Questions

Is there a KiCad symbol and footprint for the CH446Q?

Yes. The symbol is EasyEDA_Cloud:CH446Q and the footprint Package_QFP:LQFP-44_10x10mm_P0.8mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CH446Q?

LQFP-44(10x10), with 44 pins. Its footprint is drawn on this page.

Where is the CH446Q datasheet?

WCH (Nanjing Qinheng Microelectronics) publishes it: the Datasheet link on this page opens it.

Where can I order the CH446Q?

JLCPCB lists it as part C109471, with 1,054 in stock; the sellers' links on this page open their listings.

What can replace the CH446Q?

Parts like it in the library: the CH446X by WCH (Nanjing Qinheng Microelectronics), the MT8816AF1 by Microchip Technology, the SGM6516YLFB44G/TY by SG Micro and the MS8816P by Hangzhou Ruimeng Tech. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the CH446Q?

6 boards in 4 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

4