component

CA-IF4420S

Public Unreviewed

by Ray

Chipanalog RS-485/RS-422 ICs, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentcomm-uartca-if4420s
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Contents

README

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CA-IF4420S

Chipanalog · RS-485/RS-422 ICs · SOIC-8

CA-IF4420S from Chipanalog, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 TXD input Transmit data input. TXD high drives the CAN bus recessive; TXD low drives the bus dominant. Internally pulled up to VIO.
2 GND power_in Ground reference.
3 VCC power_in 5 V bus-side supply input (4.5 V to 5.5 V recommended). Bypass with a 0.1 µF ceramic capacitor placed close to the pin between VCC and GND.
4 RXD output Receiver data output. High when the CAN bus is recessive, low when the bus is dominant. Output is referenced to VIO.
5 VIO power_in I/O supply for logic-level translation (1.7 V to 5.5 V). Sets the reference for TXD, RXD, and POL logic thresholds so the transceiver can interface with 1.8 V / 2.5 V / 3.3 V / 5 V controllers.
6 CANL bidirectional Low-side CAN bus I/O. Tolerates ±58 V bus fault voltage and ±30 V receiver common-mode range.
7 CANH bidirectional High-side CAN bus I/O. Tolerates ±58 V bus fault voltage and ±30 V receiver common-mode range.
8 POL input Polarity control input. POL = low selects normal (default) CAN bus polarity; POL = high inverts the CANH/CANL polarity. Referenced to VIO logic levels.

Key specifications

Parameter Value
Manufacturer Chipanalog
Package SOIC-8
Category Comm/UART
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • CA-IF4420S

CAD (KiCad official)

  • Symbol: CA-IF4420S
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Chipanalog datasheet (20 pp, sha256 b6a5642576e922f3, retrieved 2026-08-17, 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF