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SIT232EPE
Public Made by Adomby adom
SIT RS232 ICs, DIP-16. 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
markdownSIT232EPE
SIT · RS232 ICs · DIP-16
SIT232EPE from SIT, in a DIP-16. 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 | C1+ | passive | Positive terminal of the voltage-doubler charge-pump capacitor C1. |
| 2 | V+ | power_out | Voltage-doubler charge-pump output (V+ rated up to VCC-0.3 to +14 V), with storage capacitor to GND. |
| 3 | C1- | passive | Negative terminal of the voltage-doubler charge-pump capacitor C1. |
| 4 | C2+ | passive | Positive terminal of the inverting charge-pump capacitor C2. |
| 5 | C2- | passive | Negative terminal of the inverting charge-pump capacitor C2. |
| 6 | V- | power_out | Inverting charge-pump voltage output (rated down to -14 V), with storage capacitor to GND. |
| 7 | T2OUT | output | Transmitter 2 RS-232 signal output, output swing at least ±5.0 V with 3 kΩ load. |
| 8 | R2IN | input | Receiver 2 RS-232 signal input, input range ±30 V with 3 to 7 kΩ input impedance. |
| 9 | R2OUT | output | Receiver 2 logic output, CMOS/TTL level, inverting. |
| 10 | T2IN | input | Transmitter 2 TTL/CMOS logic input, low max 0.8 V and high min 2 V. |
| 11 | T1IN | input | Transmitter 1 TTL/CMOS logic input, low max 0.8 V and high min 2 V. |
| 12 | R1OUT | output | Receiver 1 logic output, CMOS/TTL level, inverting. |
| 13 | R1IN | input | Receiver 1 RS-232 signal input, input range ±30 V with 3 to 7 kΩ input impedance. |
| 14 | T1OUT | output | Transmitter 1 RS-232 signal output, output swing at least ±5.0 V with 3 kΩ load. |
| 15 | GND | power_in | Ground. |
| 16 | VCC | power_in | Power supply, 5 V ±10%, with a decoupling capacitor to GND placed close to the device. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SIT |
| Package | DIP-16 |
| 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 | -0.3 | 6 | V | 2 | ||
| Doubler pin voltage | V+ | 14 | V | VCC-0.3 to +14 | 2 | ||
| Inverter pin voltage | V- | -14 | 0.3 | V | +0.3 to -14 | 2 | |
| V+ + /V-/ | V+ + /V-/ | 13 | V | 2 | |||
| Receiver input voltage | R1IN, R2IN | -30 | 30 | V | 2 | ||
| Operating temperature range | -40 | 85 | °C | 2 | |||
| Storage temperature range | -60 | 150 | °C | 2 | |||
| Soldering temperature | 300 | °C | 2 | ||||
| No-load supply current | Isup | 5 | 10 | mA | 4 | ||
| Logic input low level | VTTIN_L | 0.8 | V | T1IN, T2IN | 4 | ||
| Logic input high level | VTTIN_H | 2 | V | T1IN, T2IN | 4 | ||
| Logic input hysteresis | 0.3 | V | T1IN, T2IN | 4 | |||
| Input logic current | ITIN | 1 | 10 | uA | T1IN, T2IN; ±1 typ, ±10 max | 4 | |
| Receiver output low level | VROL | 0.4 | V | IOUT=3.2mA | 4 | ||
| Receiver output high level | VROH | 3.5 | V | IOUT=-1mA | 4 | ||
| Receiver input range | VRIN | -30 | 30 | V | 5 | ||
| Receiver input low threshold | VRIL | 0.8 | 1.1 | V | 5 | ||
| Receiver input high threshold | VRIH | 1.5 | 2.4 | V | 5 | ||
| Receiver input hysteresis | 0.4 | V | 5 | ||||
| Receiver input impedance | RRIN | 3 | 5 | 7 | kΩ | 5 | |
| Transmitter output swing | VTOUT | -5 | 7.3 | 5 | V | All transmitter outputs loaded with 3 kΩ to ground; ±5.0 min, ±7.3 typ | 5 |
| Transmitter output impedance | RTOUT | 300 | Ω | VCC=0V, transmitter input=±2V | 5 | ||
| Transmitter short-circuit current | Itsc | 10 | 60 | mA | ±10 typ, ±60 max | 5 | |
| Data rate | Speed | 120 | kbps | RL=3kΩ, CL=1000pF | 6 | ||
| Receiver propagation delay high-to-low | tRPHL | 0.5 | 10 | us | CL=150pF | 6 | |
| Receiver propagation delay low-to-high | tRPLH | 0.5 | 10 | us | CL=150pF | 6 | |
| Transmitter slew rate | SR | 4 | 30 | V/us | RL=3kΩ |
6 |
CAD (KiCad official)
- Symbol:
SIT232EPE - Footprint:
Package_DIP:DIP-16_W7.62mm - 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files:
sit232epe-etched.step/sit232epe-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sit232epe.step/sit232epe.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SIT datasheet (10 pp, sha256
6c1dfd11da88592e, retrieved 2026-10-22, 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: 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).