component

PCA9548ADB

Public Made by Adom

by adom

Texas Instruments Interface - Specialized, SSOP-24-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcommunication interface chip-uart-485-232pca9548adbfactory-2.0.0extractor-text

Verified PCA9548ADB

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier mfr, 24 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: PCA9548ADB · SSOP-24-208mil · 24 pins
  • ✓copper: 24 copper pads, none touching another net
  • ✓datasheet: all 24 pin names found in the 45-page datasheet
  • ✓distributor: lcsc C1546925, digikey 2156-PCA9548ADB-ND, mouser 595-PCA9548ADB
  • ✓family: SSOP-24_5.3x8.2mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-4vcir17h/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 24 pins = 24 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 24 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ pca9548adb.kicad_sym✓ pca9548adb.kicad_mod✓ pca9548adb.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 2h ago
viewers pca9548adb: viewers · Ray 2h ago
package.json Publish 0.1.0 · Ray 2h ago
page.json Set visibility: public · Ray 2h ago
pca9548adb-etched.glb Publish 0.1.0 · Ray 2h ago
pca9548adb-etched.step pca9548adb: factory component page (tier=mfr) · Ray 2h ago
pca9548adb-hero.glb pca9548adb: hero GLB from the etched model (keeps the MPN mark) · Ray 2h ago
pca9548adb-hero.overlay.json Publish 0.1.0 · Ray 2h ago
pca9548adb.glb Publish 0.1.0 · Ray 2h ago
pca9548adb.kicad_mod Publish 0.1.0 · Ray 2h ago
pca9548adb.kicad_sym Publish 0.1.0 · Ray 2h ago
pca9548adb.lbr Publish 0.1.0 · Ray 2h ago
pca9548adb.step Publish 0.1.0 · Ray 2h ago
README.md Publish 0.1.0 · Ray 2h ago
verification.json Verified: Published by the parts factory: tier mfr, 24 pins · Ray 2h ago

PCA9548ADB

Texas Instruments · Interface - Specialized · SSOP-24-208mil

PCA9548ADB from Texas Instruments, in a SSOP-24-208mil. 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 A0 input Address input 0; connect directly to VCC or ground.
2 A1 input Address input 1; connect directly to VCC or ground.
3 RESET input Active-low reset input; connect to VCC through a pull-up resistor if not used.
4 SD0 bidirectional Serial data 0; connect to VCC through a pull-up resistor.
5 SC0 bidirectional Serial clock 0; connect to VCC through a pull-up resistor.
6 SD1 bidirectional Serial data 1; connect to VCC through a pull-up resistor.
7 SC1 bidirectional Serial clock 1; connect to VCC through a pull-up resistor.
8 SD2 bidirectional Serial data 2; connect to VCC through a pull-up resistor.
9 SC2 bidirectional Serial clock 2; connect to VCC through a pull-up resistor.
10 SD3 bidirectional Serial data 3; connect to VCC through a pull-up resistor.
11 SC3 bidirectional Serial clock 3; connect to VCC through a pull-up resistor.
12 GND power_in Ground.
13 SD4 bidirectional Serial data 4; connect to VCC through a pull-up resistor.
14 SC4 bidirectional Serial clock 4; connect to VCC through a pull-up resistor.
15 SD5 bidirectional Serial data 5; connect to VCC through a pull-up resistor.
16 SC5 bidirectional Serial clock 5; connect to VCC through a pull-up resistor.
17 SD6 bidirectional Serial data 6; connect to VCC through a pull-up resistor.
18 SC6 bidirectional Serial clock 6; connect to VCC through a pull-up resistor.
19 SD7 bidirectional Serial data 7; connect to VCC through a pull-up resistor.
20 SC7 bidirectional Serial clock 7; connect to VCC through a pull-up resistor.
21 A2 input Address input 2; connect directly to VCC or ground.
22 SCL bidirectional Serial clock bus; connect to VCC through a pull-up resistor.
23 SDA bidirectional Serial data bus; connect to VCC through a pull-up resistor.
24 VCC power_in Supply voltage, 2.3 V to 5.5 V recommended operating range.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-24-208mil
Category Communication Interface Chip/UART/485/232
Pins 24

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage VCC 2.3 5.5 V 5
Operating free-air temperature TA -40 85 °C 5
Supply voltage VCC -0.5 7 V 5
Input voltage VI -0.5 7 V 5
Input current II -20 20 mA 5
Output current IO -25 25 mA 5
Supply current ICC -100 100 mA 5
Storage temperature Tstg -65 150 °C 5
Junction-to-ambient thermal resistance (DB) RθJA 89.1 °C/W 5
Junction-to-case (top) thermal resistance (DB) RθJC(top) 51.1 °C/W 5
Junction-to-board thermal resistance (DB) RθJB 46.6 °C/W 5
Power-on reset voltage, VCC rising VPORR 1.2 1.5 V No load, VI = VCC or GND 6
Power-on reset voltage, VCC falling VPORF 0.8 1 V No load, VI = VCC or GND 6
Switch output voltage Vo(sw) 3.6 V Vi(sw) = VCC, ISWout = -100 μA, VCC 5 V 6
Switch output voltage Vo(sw) 2.6 4.5 V Vi(sw) = VCC, ISWout = -100 μA, VCC 4.5 V to 5.5 V 6
Switch output voltage Vo(sw) 1.9 V Vi(sw) = VCC, ISWout = -100 μA, VCC 3.3 V 6
Switch output voltage Vo(sw) 1.6 2.8 V Vi(sw) = VCC, ISWout = -100 μA, VCC 3 V to 3.6 V 6
Switch output voltage Vo(sw) 1.5 V Vi(sw) = VCC, ISWout = -100 μA, VCC 2.5 V 6
Switch output voltage Vo(sw) 1.1 2 V Vi(sw) = VCC, ISWout = -100 μA, VCC 2.3 V to 2.7 V 6
Low-level output current SDA IOL 3 6 mA VOL = 0.4 V, VCC 2.3 V to 5.5 V 6
Low-level output current SDA IOL 6 9 mA VOL = 0.6 V, VCC 2.3 V to 5.5 V 6
Input current SCL, SDA II -1 1 μA VI = VCC or GND, VCC 2.3 V to 5.5 V 6
Input current SC7-SC0, SD7-SD0 II -1 1 μA 6
Input current A2-A0 II -1 1 μA 6
Input current RESET II -1 1 μA 6
Operating supply current ICC 50 80 μA fSCL = 400 kHz, VI = VCC or GND, IO = 0, VCC 5.5 V 6
Operating supply current ICC 20 35 μA fSCL = 400 kHz, VI = VCC or GND, IO = 0, VCC 3.6 V 6
Operating supply current ICC 11 20 μA fSCL = 400 kHz, VI = VCC or GND, IO = 0, VCC 2.7 V 6
Operating supply current ICC 9 30 μA fSCL = 100 kHz, VI = VCC or GND, IO = 0, VCC 5.5 V 6
Operating supply current ICC 6 15 μA fSCL = 100 kHz, VI = VCC or GND, IO = 0, VCC 3.6 V 6
Operating supply current ICC 4 8 μA fSCL = 100 kHz, VI = VCC or GND, IO = 0, VCC 2.7 V 6
Standby supply current, low inputs ICC 0.2 2 μA VI = GND, IO = 0, VCC 5.5 V 6
Standby supply current, low inputs ICC 0.1 2 μA VI = GND, IO = 0, VCC 3.6 V 6
Standby supply current, low inputs ICC 0.1 1 μA VI = GND, IO = 0, VCC 2.7 V 6
Standby supply current, high inputs ICC 0.2 2 μA VI = VCC, IO = 0, VCC 5.5 V 6
Standby supply current, high inputs ICC 0.1 2 μA VI = VCC, IO = 0, VCC 3.6 V 6
Standby supply current, high inputs ICC 0.1 1 μA VI = VCC, IO = 0, VCC 2.7 V 6
Supply-current change SCL, SDA ΔICC 3 20 μA SCL or SDA input at 0.6 V, other inputs at VCC or GND 6
Input capacitance A2-A0 Ci 4 5 pF VI = VCC or GND, VCC 2.3 V to 5.5 V 6
Input capacitance RESET Ci 4 5 pF 6
Off-state input/output capacitance SCL Cio(off) 20 28 pF VI = VCC or GND, Switch OFF 6
Off-state input/output capacitance SDA Cio(off) 20 28 pF VI = VCC or GND, Switch OFF, VCC 2.3 V to 5.5 V 6
Off-state input/output capacitance SC7-SC0, SD7-SD0 Cio(off) 5.5 7.5 pF 6
Switch-on resistance RON 4 10 20 Ω VO = 0.4 V, IO = 15 mA, VCC 4.5 V to 5.5 V 6
Switch-on resistance RON 5 12 30 Ω VO = 0.4 V, IO = 15 mA, VCC 3 V to 3.6 V 6
Switch-on resistance RON 7 15 45 Ω VO = 0.4 V, IO = 10 mA, VCC 2.3 V to 2.7 V 6
Standard-mode I2C clock frequency fSCL 0 100 kHz Standard mode 7
Fast-mode I2C clock frequency fSCL 0 400 kHz Fast mode 7
Standard-mode I2C clock high time tsch 4 μs Standard mode 7
Standard-mode I2C clock low time tscl 4.7 μs Standard mode 7
Fast-mode I2C clock high time tsch 0.6 μs Fast mode 7
Fast-mode I2C clock low time tscl 1.3 μs Fast mode 7
Standard-mode serial-data setup time tsds 250 ns Standard mode 7
Fast-mode serial-data setup time tsds 100 ns Fast mode 7
Standard-mode bus free time tbuf 4.7 μs Standard mode 7
Fast-mode bus free time tbuf 1.3 μs Fast mode 7
RESET pulse duration low tW(L) 6 ns 8
Recovery time from RESET to start tREC(STA) 0 ns 8
RESET time (SDA clear) trst 500 ns RESET to SDA 8

CAD (KiCad official)

  • Symbol: PCA9548ADB
  • Footprint: Package_SO:SSOP-24_5.3x8.2mm_P0.65mm
  • 3D model: SSOP-24-208mil (KiCad packages3D, STEP)
  • 3D model files: pca9548adb-etched.step / pca9548adb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pca9548adb.step / pca9548adb.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (45 pp, sha256 b2238acf0fecd58c, retrieved 2026-11-06, tier: manufacturer)
  • 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