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AM26LS31CDBR
Public Made by Adomby adom
Texas Instruments RS-485/RS-422 ICs, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownAM26LS31CDBR
Texas Instruments · RS-485/RS-422 ICs · SSOP-16-208mil
AM26LS31CDBR from Texas Instruments, in a SSOP-16-208mil. 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 | 1A | input | Logic data input to RS-422 driver number 1. |
| 2 | 1Y | tri_state | RS-422 data line (true output) of driver 1, 3-state and high impedance in power-off condition. |
| 3 | 1Z | tri_state | RS-422 data line (complementary output) of driver 1, 3-state and high impedance in power-off condition. |
| 4 | G | input | Driver enable input, active high, common to all four drivers. |
| 5 | 2Z | tri_state | RS-422 data line (complementary output) of driver 2, 3-state and high impedance in power-off condition. |
| 6 | 2Y | tri_state | RS-422 data line (true output) of driver 2, 3-state and high impedance in power-off condition. |
| 7 | 2A | input | Logic data input to RS-422 driver number 2. |
| 8 | GND | power_in | Device ground pin (per package drawing; the pin table lists this function at pin 16). |
| 9 | 3A | input | Logic data input to RS-422 driver number 3. |
| 10 | 3Y | tri_state | RS-422 data line (true output) of driver 3, 3-state and high impedance in power-off condition. |
| 11 | 3Z | tri_state | RS-422 data line (complementary output) of driver 3, 3-state and high impedance in power-off condition. |
| 12 | ~{G} | input | Driver enable input, active low, common to all four drivers. |
| 13 | 4Z | tri_state | RS-422 data line (complementary output) of driver 4, 3-state and high impedance in power-off condition. |
| 14 | 4Y | tri_state | RS-422 data line (true output) of driver 4, 3-state and high impedance in power-off condition. |
| 15 | 4A | input | Logic data input to RS-422 driver number 4. |
| 16 | VCC | power_in | Power input, connect to 5-V power source (4.75 V to 5.25 V recommended for AM26LS31C, 7 V absolute maximum); the pin table lists this function at pin 8. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-208mil |
| Category | Interface ICs |
| Pins | 16 |
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 | 7 | V | 4 | |||
| Input voltage | VI | 7 | V | 4 | |||
| Output off-state voltage | 5.5 | V | 4 | ||||
| Lead temperature | 260 | °C | 1,6 mm (1/16 in) from case for 10 s | 4 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Supply voltage | VCC | 4.75 | 5 | 5.25 | V | AM26LS31C | 4 |
| High-level input voltage | VIH | 2 | V | 4 | |||
| Low-level input voltage | VIL | 0.8 | V | 4 | |||
| High-level output current | IOH | -20 | mA | 4 | |||
| Low-level output current | IOL | 20 | mA | 4 | |||
| Operating free-air temperature | TA | 0 | 70 | °C | AM26LS31C | 4 | |
| Junction-to-ambient thermal resistance | RθJA | 82 | °C/W | DB (SSOP) package | 4 | ||
| Input clamp voltage | VIK | -1.5 | V | VCC = MIN, II = -18 mA | 5 | ||
| High-level output voltage | VOH | 2.5 | V | VCC = MIN, IOH = -20 mA | 5 | ||
| Low-level output voltage | VOL | 0.5 | V | VCC = MIN, IOL = 20 mA | 5 | ||
| Off-state output current | IOZ | -20 | μA | VCC = MIN, VO = 0.5 V | 5 | ||
| Off-state output current | IOZ | 20 | μA | VCC = MIN, VO = 2.5 V | 5 | ||
| Input current at maximum input voltage | II | 0.1 | mA | VCC = MAX, VI = 7 V | 5 | ||
| High-level input current | IIH | 20 | μA | VCC = MAX, VI = 2.7 V | 5 | ||
| Low-level input current | IIL | -0.36 | mA | VCC = MAX, VI = 0.4 V | 5 | ||
| Short-circuit output current | IOS | -30 | -150 | mA | VCC = MAX | 5 | |
| Supply current | ICC | 32 | 80 | mA | VCC = MAX, all outputs disabled | 5 | |
| Propagation delay time, low- to high-level output | tPLH | 14 | 20 | ns | CL = 30 pF, S1 and S2 open | 5 | |
| Propagation delay time, high- to low-level output | tPHL | 14 | 20 | ns | CL = 30 pF, S1 and S2 open | 5 | |
| Output enable time to high level | tPZH | 25 | 40 | ns | CL = 30 pF, RL = 75 Ω | 5 | |
| Output enable time to low level | tPZL | 37 | 45 | ns | RL = 180 Ω | 5 | |
| Output disable time from high level | tPHZ | 21 | 30 | ns | CL = 10 pF, S1 and S2 closed | 5 | |
| Output disable time from low level | tPLZ | 23 | 35 | ns | 5 | ||
| Output-to-output skew | tSKEW | 1 | 6 | ns | CL = 30 pF, S1 and S2 open | 5 |
CAD (KiCad official)
- Symbol:
AM26LS31CDBR - Footprint:
Package_SO:SSOP-16_5.3x6.2mm_P0.65mm - 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
- 3D model files:
am26ls31cdbr-etched.step/am26ls31cdbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);am26ls31cdbr.step/am26ls31cdbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (28 pp, sha256
382fd2e59c5166d5, retrieved 2026-11-07, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).