

Overview
The FSUSB42MUX is an analog Switches, Multiplexer made by onsemi in a MSOP-10 package with 10 pins. -40℃~+85℃ 12ns 13ns 2 250ps 2:1 3.7pF 3.9Ω 3V~4.4V 720MHz MSOP-10 Analog Switches, Multiplexers ROHS.
PCBKit's library has its KiCad symbol (Interface_USB:FSUSB42MUX, from KiCad's library) and its footprint (Package_SO:MSOP-10_3x3mm_P0.5mm, from KiCad's library), ready for a KiCad board. 25,349 are in stock at JLCPCB (part C11355). 72 open-source boards in 54 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
8- Supply, least
- 3 V · VCC, recommended operating min · p. 3
- Supply, most
- 4.4 V · VCC, recommended operating max · p. 3
- Supply, absolute maximum
- 5.6 V · VCC, absolute max · p. 3
- Works from
- -40 °C · TA, operating ambient min · p. 3
- Works up to
- 85 °C · TA, operating ambient max · p. 3
- Takes working
- 1 µA · VCC, quiescent supply current max, VCNTRL=0 or VCC, IOUT=0 · p. 4
- A pin gives at most
- 100 mA · DC output current absolute max · p. 3
- Data rate, most
- 480 Mbit/s · USB 2.0 Hi-Speed data rate max · p. 1
What it is and has
5- On capacitance
- 3.7pF typical · p. 1
- On resistance
- 3.9Ω typical · p. 1
- Package option
- 10-Lead MSOP · p. 1
- ESD rating
- 8kV; >16kV Power/GND · p. 1
- Protection
- Over-Voltage Tolerance (OVT) on all USB Ports · p. 1
Specifications
44| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Supply Voltage VCC | min -0.5 · max 5.6 V | 3 | |
| DC Input Voltage (S, /OE) VCNTRL | Maximum: VCC; note 1 | min -0.5 V | 3 |
| DC Switch I/O Voltage VSW | Note 1 | min -0.5 · max 5.25 V | 3 |
| DC Input Diode Current IIK | min -50 mA | 3 | |
| DC Output Current IOUT | max 100 mA | 3 | |
| Storage Temperature TSTG | min -65 · max 150 °C | 3 | |
| Moisture Sensitivity Level (JEDEC J-STD-020A) MSL | max 1 Level | 3 | |
| Human Body Model, JEDEC: JESD22-A114 ESD | All Pins | min 7 kV | 3 |
| Human Body Model, JEDEC: JESD22-A114 ESD | I/O to GND | min 8 kV | 3 |
| Human Body Model, JEDEC: JESD22-A114 ESD | Power to GND | min 16 kV | 3 |
| Human Body Model, JEDEC: JESD22-A114 ESD | D+/D- | min 9 kV | 3 |
| IEC 61000-4-2 System on USB Connector Pins D+ & D- ESD | Air Discharge | min 15 kV | 3 |
| IEC 61000-4-2 System on USB Connector Pins D+ & D- ESD | Contact | min 8 kV | 3 |
| Charged Device Model, JEDEC: JESD22-C101 ESD | min 2 kV | 3 | |
| Supply Voltage VCC | min 3 · max 4.4 V | 3 | |
| Control Input Voltage (S, /OE) VCNTRL | Maximum: VCC; note 2 | min 0 V | 3 |
| Switch I/O Voltage VSW | min -0.5 · max 4.5 V | 3 | |
| Operating Temperature TA | min -40 · max 85 °C | 3 | |
| Clamp Diode Voltage VIK | IIN=-18mA; VCC=3.0V; TA=-40°C to +85°C | max -1.2 V | 4 |
| Input Voltage High VIH | VCC=3.0 to 3.6V; TA=-40°C to +85°C | min 1.3 V | 4 |
| Input Voltage High VIH | VCC=4.3V; TA=-40°C to +85°C | min 1.7 V | 4 |
| Input Voltage Low VIL | VCC=3.0 to 3.6V; TA=-40°C to +85°C | max 0.5 V | 4 |
| Input Voltage Low VIL | VCC=4.3V; TA=-40°C to +85°C | max 0.7 V | 4 |
| Control Input Leakage IIN | VSW=0 to VCC; VCC=0 to 4.3V; TA=-40°C to +85°C | min -1 · max 1 uA | 4 |
| Off State Leakage IOZ | 0 ≤ Dn, HSD1n, HSD2n ≤ 3.6V; VCC=4.3V; TA=-40°C to +85°C | min -2 · max 2 uA | 4 |
| Power-Off Leakage Current (All I/O Ports) IOFF | VSW=0V to 4.3V, VCC=0V; Figure 5; TA=-40°C to +85°C | min -2 · max 2 uA | 4 |
| HS Switch On Resistance(3) RON | VSW=0.4V, ION=-8mA; VCC=3.0V; Figure 4; typical at TA=25°C | typ 3.9 · max 6.5 | 4 |
| HS Delta RON(4) ∆RON | VSW=0.4V, ION=-8mA; VCC=3.0V; typical at TA=25°C | typ 0.65 | 4 |
| Quiescent Supply Current ICC | VCNTRL=0 or VCC, IOUT=0; VCC=4.3V; TA=-40°C to +85°C | max 1 uA | 4 |
| Increase in ICC Current per Control Voltage and VCC ICCT | VCNTRL=2.6V, VCC=4.3V; TA=-40°C to +85°C | max 10 uA | 4 |
| Increase in ICC Current per Control Voltage and VCC ICCT | VCNTRL=1.8V, VCC=4.3V; TA=-40°C to +85°C | max 15 uA | 4 |
| Turn-On Time S, /OE to Output tON | RL=50Ω, CL=5pF, VSW=0.8V; VCC=3.0 to 3.6V; Figure 6, Figure 7; typical at VCC=3.3V, TA=25°C | typ 13 · max 30 ns | 5 |
| Turn-Off Time S, /OE to Output tOFF | RL=50Ω, CL=5pF, VSW=0.8V; VCC=3.0 to 3.6V; Figure 6, Figure 7; typical at VCC=3.3V, TA=25°C | typ 12 · max 25 ns | 5 |
| Propagation Delay(5) tPD | CL=5 pF, RL=50Ω; VCC=3.3V; Figure 6, Figure 8; typical at TA=25°C | typ 0.25 ns | 5 |
| Break-Before-Make tBBM | RL=50Ω, CL=5pF, VSW1=VSW2=0.8V; VCC=3.0 to 3.6V; Figure 10; TA=-40°C to +85°C | min 2 · max 6.5 ns | 5 |
| Off Isolation OIRR | RL=50Ω, f=240MHz; VCC=3.0 to 3.6V; Figure 12; typical at VCC=3.3V, TA=25°C | typ -30 dB | 5 |
| Non-Adjacent Channel Crosstalk Xtalk | RL=50Ω, f=240MHz; VCC=3.0 to 3.6V; Figure 13; typical at VCC=3.3V, TA=25°C | typ -45 dB | 5 |
| -3db Bandwidth BW | RL=50Ω, CL=0pF; VCC=3.0 to 3.6V; Figure 11; typical at VCC=3.3V, TA=25°C | typ 720 MHz | 5 |
| -3db Bandwidth BW | RL=50Ω, CL=5pF; VCC=3.0 to 3.6V; Figure 11; typical at VCC=3.3V, TA=25°C | typ 550 MHz | 5 |
| Skew of Opposite Transitions of the Same Output(6) tSK(P) | CL=5pF, RL=50Ω; VCC=3.0 to 3.6V; Figure 9; typical at VCC=3.3V, TA=25°C | typ 20 ps | 5 |
| Total Jitter tJ | RL=50Ω, CL=5pf, tR=tF=500ps (10-90%) at 480Mbps (PRBS=215 – 1); VCC=3.0 to 3.6V; note 6; typical at VCC=3.3V, TA=25°C | typ 200 ps | 5 |
| Control Pin Input Capacitance CIN | VCC=0V; typical at TA=25°C | typ 1.5 pF | 5 |
| D+/D- On Capacitance CON | VCC=3.3V, /OE=0V, f=240MHz; Figure 15; typical at TA=25°C | typ 3.7 pF | 5 |
| D1n, D2n Off Capacitance COFF | VCC and /OE=3.3V; Figure 14; typical at TA=25°C | typ 2 pF | 5 |
Pins, by the datasheet
10- 1 VCC
- Supply Voltage. · p. 2
- 2 Sel
- Switch Select. · p. 2
- 3 D+
- USB Data Bus. · p. 2
- 4 D-
- USB Data Bus. · p. 2
- 5 GND
- Ground. · p. 2
- 6 HSD1-
- Multiplexed Source Inputs (UART / USB). · p. 2
- 7 HSD1+
- Multiplexed Source Inputs (UART / USB). · p. 2
- 8 HSD2-
- Multiplexed Source Inputs (USB Only). · p. 2
- 9 HSD2+
- Multiplexed Source Inputs (USB Only). · p. 2
- 10 /OE
- Switch Enable; HIGH disconnects the switch. · p. 2
Ordering codes, by the datasheet
2- FSUSB42UMX
- 10-Lead UMLP, 1.4 x 1.8mm · UMLP package; top mark HE; operating temperature -40 to +85°C · p. 1
- FSUSB42MUX
- 10-Lead MSOP, JEDEC MO-187, 3.0mm Wide · MSOP package; top mark FSUSB42; operating temperature -40 to +85°C · p. 1
Parameters
15- Bandwidth
- 720MHz
- Con
- 3.7pF
- Current - Supply
- 1uA
- Data Rate
- 480Mbps
- Features
- Bidirectional analog channel
- Number of Channels
- 2
- Operating Temperature
- -40℃~+85℃
- Output Current per Pin(Max)
- 100mA
- Propagation Delay (tpd)
- 250ps
- Ron
- 3.9Ω
- Switch Circuit
- 2:1
- Turn-off time
- 12ns
- Turn-on time
- 13ns
- Voltage - Supply
- 3V~4.4V
- Voltage - Supply(Absolute Max)
- 5.6V
Order codes
1- FSUSB42MUXLCSC C11355
Pinout
10| Pin | Name | Type |
|---|---|---|
| 1 | VCC | Power in |
| 2 | SEL | Input |
| 3 | D+ | Input/output |
| 4 | D- | Input/output |
| 5 | GND | Power in |
| 6 | HSD1- | Input/output |
| 7 | HSD1+ | Input/output |
| 8 | HSD2- | Input/output |
| 9 | HSD2+ | Input/output |
| 10 | OE | Input |
Open-source boards using it
All 72- 4 layers46.3 × 15 mm

- 4 layers23.4 × 12 mm

- 2 layers109 × 71 mm

- 2 layers142.1 × 106 mm

- 2 layers31.9 × 36 mm

Lemon pcb swizzle
rianadon/Cosmos-Keyboard-PCBs
Open-Source keyboard PCB designs for the Cosmos Keyboard Generator
63 parts43 - 4 layers110 × 100 mm

- 12 layers232 × 250 mm

KlusterLab r2.0
PCB-Arts/fast-open-switch-hardware
KlusterLab is an open FPGA development platform designed for experimenting with high-speed interfaces and formally verified IP cores.
1,169 parts15 - 2 layers174 × 111 mm

Pedalboard hw
pedalboard/pedalboard-hw
pedalboard audio midi processor open hardware
169 parts14CERN-OHL-P-2.0
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/onsemi/FSUSB42MUX" title="FSUSB42MUX in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/FSUSB42MUX.jpg" alt="FSUSB42MUX" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/FSUSB42MUX)Questions
Is there a KiCad symbol and footprint for the FSUSB42MUX?
Yes. The symbol is Interface_USB:FSUSB42MUX and the footprint Package_SO:MSOP-10_3x3mm_P0.5mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the FSUSB42MUX?
MSOP-10, with 10 pins. Its footprint is drawn on this page.
Where is the FSUSB42MUX datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the FSUSB42MUX?
JLCPCB lists it as part C11355, with 25,349 in stock; the sellers' links on this page open their listings.
What can replace the FSUSB42MUX?
Parts like it in the library: the BL1555MM by BL, the RS2105XN by Jiangsu RUNIC Tech, the CH442E by WCH (Nanjing Qinheng Microelectronics) and the BL1532MSOP by BL. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the FSUSB42MUX?
72 boards in 54 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8BL1555MM
MSOP-10-40℃~+125℃ 1.65V~5.5V 2 255pF 25ns 2:1 300mΩ 33MHz 42ns MSOP-10 Analog Switches, Multiplexers ROHSBLAnalog Switches, MultiplexersRS2105XN
MSOP-10-40℃~+125℃ 1.8V~5.5V 17ns 2 2:1 30MHz 350pF 500mΩ 50ns MSOP-10 Analog Switches, Multiplexers ROHSJiangsu RUNIC TechAnalog Switches, MultiplexersCH442E
MSOP-10-40℃~+85℃ 2 2:1 2ns 3ns 4V~5.5V 550MHz 5Ω 9pF MSOP-10 Analog Switches, Multiplexers ROHSWCH (Nanjing Qinheng Microelectronics)Analog Switches, MultiplexersBL1532MSOP
MSOP-10MSOP-10 Analog Switches, Multiplexers ROHSBLAnalog Switches, MultiplexersRS2227XN
MSOP-10-40℃~+85℃ 1.8V~5.5V 15ns 2 20ns 2:1 350ps 550MHz 6Ω 7pF MSOP-10 Analog Switches, Multiplexers ROHSJiangsu RUNIC TechAnalog Switches, MultiplexersFSUSB42MUX-TP
MSOP-10MSOP-10 Analog Switches, Multiplexers ROHSTECH PUBLICAnalog Switches, MultiplexersRS2058XN
MSOP-10-40℃~+125℃ 1.8V~5.5V 15pF 2 25ns 2:1 300MHz 30ns 4.5Ω MSOP-10 Analog Switches, Multiplexers ROHSJiangsu RUNIC TechAnalog Switches, MultiplexersRS2102XN
MSOP-10-40℃~+125℃ 1.8V~5.5V 120MHz 17ns 2 29ns 2:1 3Ω 50pF MSOP-10 Analog Switches, Multiplexers ROHSJiangsu RUNIC TechAnalog Switches, Multiplexers