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DS14C89AMX

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Texas Instruments RS232 ICs, SOIC-14. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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DS14C89AMX

Texas Instruments · RS232 ICs · SOIC-14

DS14C89AMX from Texas Instruments, in a SOIC-14. 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 1A input Channel A EIA/TIA-232-E receiver input; accepts ±25 V signals; input threshold VTH 1.3-2.7 V, VTL 0.5-1.9 V; IIN up to ±8.3 mA at ±25 V.
2 1C passive Channel A response-control pin; replaces external noise-filter capacitor of DS1489A; may be tied high, tied low, or left open (NC).
3 1Y output Channel A TTL/CMOS logic output; VOH min 2.8 V at −3.2 mA, VOL max 0.4 V at +3.2 mA; output high for open input (fail-safe).
4 2A input Channel B EIA/TIA-232-E receiver input; accepts ±25 V signals; input threshold VTH 1.3-2.7 V, VTL 0.5-1.9 V; IIN up to ±8.3 mA at ±25 V.
5 2C passive Channel B response-control pin; replaces external noise-filter capacitor of DS1489A; may be tied high, tied low, or left open (NC).
6 2Y output Channel B TTL/CMOS logic output; VOH min 2.8 V at −3.2 mA, VOL max 0.4 V at +3.2 mA; output high for open input (fail-safe).
7 GND power_in Ground reference (0 V).
8 3Y output Channel C TTL/CMOS logic output; VOH min 2.8 V at −3.2 mA, VOL max 0.4 V at +3.2 mA; output high for open input (fail-safe).
9 3C passive Channel C response-control pin; replaces external noise-filter capacitor of DS1489A; may be tied high, tied low, or left open (NC).
10 3A input Channel C EIA/TIA-232-E receiver input; accepts ±25 V signals; input threshold VTH 1.3-2.7 V, VTL 0.5-1.9 V; IIN up to ±8.3 mA at ±25 V.
11 4Y output Channel D TTL/CMOS logic output; VOH min 2.8 V at −3.2 mA, VOL max 0.4 V at +3.2 mA; output high for open input (fail-safe).
12 4C passive Channel D response-control pin; replaces external noise-filter capacitor of DS1489A; may be tied high, tied low, or left open (NC).
13 4A input Channel D EIA/TIA-232-E receiver input; accepts ±25 V signals; input threshold VTH 1.3-2.7 V, VTL 0.5-1.9 V; IIN up to ±8.3 mA at ±25 V.
14 VCC power_in Positive supply voltage; recommended operating range +4.5 V to +5.5 V; absolute maximum +6 V; ICC max 900 µA (no load).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-14
Category Interface
Pins 14

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 (recommended) VCC 4.5 5.5 V GND = 0V 2
Operating free air temperature (DS14C89A) TA 0 75 °C DS14C89A 2
Supply voltage VCC (absolute maximum) VCC 6 V 2
Input voltage -30 30 V 2
Junction temperature 150 °C 2
Continuous power dissipation, D package 1063 mW D package, @ +25°C 2
Storage temperature range -65 150 °C 2
Lead temperature (soldering) 260 °C Soldering, 4 seconds 2
ESD rating 1.8 2 kV HBM, 1.5 kΩ, 100 pF 2
Input high threshold VTH 1.3 2.7 V 3
Input low threshold VTL 0.5 1.9 V 3
Input current IIN 3.6 8.3 mA VIN = +25V, VCC = +4.5V to +5.5V 3
Input current IIN -8.3 -3.6 mA VIN = -25V 3
Input current IIN 0.43 1 mA VIN = +3V 3
Input current IIN -1 -0.43 mA VIN = -3V 3
Input current (power-off) IIN 2.14 5 mA VIN = +15V, VCC = 0V (Power-Off) 3
Input current (power-off) IIN -5 -2.14 mA VIN = -15V, VCC = 0V (Power-Off) 3
Input current (power-off) IIN 0.43 1 mA VIN = +3V 3
Input current (power-off) IIN -1 -0.43 mA VIN = -3V 3
Output high voltage VOH 2.8 4 V VIN = VTL (min), IOUT = −3.2 mA 3
Output high voltage VOH 3.5 4.7 V IOUT = −20μA 3
Output low voltage VOL 0.15 0.4 V VIN = VTH (max), IOUT = +3.2 mA 3
Supply current ICC 0.5 900 μA No Load, VIN = 2.7V or 0.5V 3
Propagation delay low to high tPLH 3.5 6.5 μs CI = 50 pF, input pulse width ≥ 10 μs 3
Propagation delay high to low tPHL 3.2 6.5 μs CI = 50 pF, input pulse width ≥ 10 μs 3
Output rise time tr 40 300 ns CI = 50 pF 3
Output fall time tf 40 300 ns CI = 50 pF 3
Pulse width assumed to be noise tnw 1 μs 3
Typical input hysteresis VHY 1 V 3
Typical propagation delay skew tSK 400 ns CI = 50 pF 3

CAD (KiCad official)

  • Symbol: DS14C89AMX
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D, STEP)
  • 3D model files: ds14c89amx-etched.step / ds14c89amx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ds14c89amx.step / ds14c89amx.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (16 pp, sha256 a0c9ff903402214a, retrieved 2026-10-20, tier: lcsc)
  • 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