Schematik raised $4.6M to help anyone build hardware with AISchematik raised $4.6M pre-seed

MCP23S08 P DIP-18

8-bit SPI I/O expander in DIP-18 package, operating from 1.8–5.5V. SPI interface up to 10 MHz; up to four devices per CS line via hardware address pins. Functional equivalent of MCP23008 for SPI-only designs.

Pinout

Logical pinout · physical placement not verified
MCP23S08 P DIP-18GP0VSSGP1CSGP2SCK,SI,SOGP3A0GP4A1GP5A2GP6INTAGP7VDD

2 grouped source records are expanded into separate logical pads where unambiguous; physical placement is not implied.

  • GP0–GP7
    Type · Signal
  • VSS
    Type · Ground
  • CS
    Type · SPI
  • SCK,SI,SO
    Type · Signal
  • A0–A2
    Type · Control
  • INTA
    Type · Signal
  • VDD
    Type · Power

Bare ICs

67 other options

74HC logic gates, MCP3008/MCP23017 ADCs and expanders, 24LC256 EEPROM, 4N25-series optocouplers and ULN2803A drivers — bare DIP chips with no breakout-board conveniences like pull-ups or level shifting.

View all 67

Related groups

4 groups

LED pixels

WS2812/SK6812 NeoPixel strips, rings and Jewels, APA102 DotStar pixels, and plain analog RGB strips — each matched to its protocol and host, not just its connector.

Components · Addressable LEDs · 180 parts

Converters

ADS1115/MCP3421 ADCs, MCP4725 and GP8413 DACs, CP2102 USB-UART boards, and I2C plumbing like the LTC4316 address shifter — matched to bus, resolution and signal range.

Components · Interface converters · 114 parts

Memory

24LC32/25LC256 EEPROM, I2C FRAM, 64Mbit PSRAM, and microSD breakouts up to 64GB — matched to write frequency and data volume, not just interface.

Components · Memory & storage · 39 parts

Passives

E12 resistor kits, ceramic and electrolytic capacitor sets, 1N4148/1N4007 diodes, TIP120 Darlingtons, IRLZ44N MOSFETs and 100F supercapacitors — bench stock in kit quantities.

Components · Passives · 58 parts