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MAX3318EIPWR

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Texas Instruments RS232 ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentinterface icsmax3318eipwrfactory-2.0.0extractor-text

Verified MAX3318EIPWR

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 20 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MAX3318EIPWR · TSSOP-20 · 20 pins
  • ✓copper: 20 copper pads, none touching another net
  • ✓datasheet: all 20 pin names found in the 20-page datasheet
  • ✓distributor: lcsc C2671388, digikey 296-19847-2-ND, mouser 595-MAX3318EIPWR
  • ✓family: TSSOP-20_4.4x6.5mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-0pzf50kd/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: 20 pins = 20 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 20 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ max3318eipwr.kicad_sym✓ max3318eipwr.kicad_mod✓ max3318eipwr.step
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MAX3318EIPWR

Texas Instruments · RS232 ICs · TSSOP-20

MAX3318EIPWR from Texas Instruments, in a TSSOP-20. 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 READY output Ready to transmit output, active high; READY goes high when V- falls below -3.5 V and the device is ready to transmit.
2 C1+ passive Positive voltage-doubler charge-pump capacitor terminal.
3 V+ power_out 2 × VCC generated by the charge pump.
4 C1− passive Negative voltage-doubler charge-pump capacitor terminal.
5 C2+ passive Positive inverting charge-pump capacitor terminal.
6 C2− passive Negative inverting charge-pump capacitor terminal.
7 V− power_out -2 × VCC generated by the charge pump.
8 DOUT2 output RS-232 driver output 2; DOUT to GND is limited to ±13.2 V and the output is short-circuit protected for continuous duration to GND.
9 RIN2 input RS-232 receiver input 2; receiver input voltage range is -25 V to 25 V.
10 ROUT2 output CMOS receiver output 2.
11 INVALID output Valid signal detector output, active low; a logic high indicates a valid RS-232 level is present on a receiver input.
12 DIN2 input CMOS driver input 2; high-level input must be at least 0.7 × VCC and low-level input at most 0.3 × VCC for VCC = 2.5 V to 3 V.
13 DIN1 input CMOS driver input 1; high-level input must be at least 0.7 × VCC and low-level input at most 0.3 × VCC for VCC = 2.5 V to 3 V.
14 FORCEON input Force-on input, active high; drive high to override auto power down, keeping transmitters on (FORCEOFF must be high).
15 ROUT1 output CMOS receiver output 1.
16 RIN1 input RS-232 receiver input 1; receiver input voltage range is -25 V to 25 V.
17 DOUT1 output RS-232 driver output 1; DOUT to GND is limited to ±13.2 V and the output is short-circuit protected for continuous duration to GND.
18 GND power_in Ground.
19 VCC power_in Single-supply voltage of 2.25 V to 3 V.
20 FORCEOFF input Force-off input, active low; drive low to power down transmitters and charge pump, overriding auto power down and FORCEON.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-20
Category Interface ICs
Pins 20

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 2.25 2.5 3 V 4
Receiver input voltage VI -25 25 V 4
Driver and control high-level input voltage VIH 5.5 V DIN, FORCEOFF, FORCEON; VCC = 2.5 V to 3 V 4
Driver and control low-level input voltage VIL 0 V DIN, FORCEOFF, FORCEON; VCC = 2.5 V to 3 V 4
Operating free-air temperature TA -40 85 °C MAX3318EI 4
VCC to GND VCC -0.3 6 V 4
V+ to GND V+ -0.3 7 V 4
V- to GND V- -7 0.3 V 4
V+ + /V-/ V+ + /V-/ 13 V 4
Input voltage DIN, FORCEON, FORCEOFF to GND VI -0.3 6 V 4
Input voltage RIN to GND VI -25 25 V 4
Output voltage DOUT to GND VO -13.2 13.2 V 4
Continuous power dissipation 20-pin TSSOP 559 mW TA = 70°C 4
Storage temperature range Tstg -65 150 °C 4
Lead temperature soldering 300 °C 10 s 4
Auto-power-down plus supply current ICC 1 10 µA FORCEON = GND, FORCEOFF = VCC, All RIN and DIN idle 5
Auto-power-down supply current ICC 1 10 µA FORCEOFF = GND 5
Supply current ICC 0.3 2 mA FORCEON = FORCEOFF = VCC, No load 5
Input leakage current FORCEON, DIN, FORCEOFF IIH, IIL -1 0.01 1 µA 5
Output voltage swing VO -3.7 3.7 V All driver outputs loaded with 3 kΩ to ground 5
Output short-circuit current IOS -25 25 mA 5
Output leakage current IO -25 25 µA VCC = 0 or 2.25 V to 3 V, VOUT = ±12 V, Drivers disabled 5
Output resistance ROUT 300 Ω VCC = 0, Driver output = ±2 V 5
Maximum data rate 460 kbps RL = 3 kΩ, CL = 1000 pF, One transmitter switching 5
Driver skew /tPHL, tPLH/ 100 ns 5
Transition-region slew rate SR 4 30 V/µs VCC = 2.5 V, TA = 25°C, RL = 3 kΩ to 7 kΩ, CL = 150 pF to 2500 pF 5
Input voltage range VI -25 25 V 6
Input resistance RI 3 5 7 kΩ TA = 25°C 6
Output leakage current IOZ -10 0.05 10 µA 6
Positive threshold, receiver input to INVALID high VT+ 2.7 V 6
Negative threshold, receiver input to INVALID high VT- -2.7 V 6
Receiver input threshold INVALID low VT -0.3 0.3 V 6
Auto-power-down plus delay, receiver or driver edge to driver shutdown tAUTOPRDN 15 30 60 s VCC = 2.5 V 6

CAD (KiCad official)

  • Symbol: MAX3318EIPWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: max3318eipwr-etched.step / max3318eipwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3318eipwr.step / max3318eipwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (20 pp, sha256 e01510f9142cd841, retrieved 2026-10-30, 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