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ADM3222ARSZ-REEL7
Public Made by Adomby adom
Analog Devices RS232 ICs, SSOP-20-208mil. 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
markdownADM3222ARSZ-REEL7
Analog Devices · RS232 ICs · SSOP-20-208mil
ADM3222ARSZ-REEL7 from Analog Devices, in a SSOP-20-208mil. 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 | EN | input | Active-low receiver enable: when low the receiver outputs are enabled, when high they are three-stated. |
| 2 | C1+ | passive | External capacitor 1 connects between C1+ and C1-; 0.1 µF recommended, larger up to 47 µF can be used. |
| 3 | V+ | power_out | Internally generated positive supply (+6 V nominal) from the charge pump. |
| 4 | C1- | passive | External capacitor 1 connects between C1+ and C1-; 0.1 µF recommended, larger up to 47 µF can be used. |
| 5 | C2+ | passive | External capacitor 2 connects between C2+ and C2-; 0.1 µF recommended, larger up to 47 µF can be used. |
| 6 | C2- | passive | External capacitor 2 connects between C2+ and C2-; 0.1 µF recommended, larger up to 47 µF can be used. |
| 7 | V- | power_out | Internally generated negative supply (-6 V nominal) from the charge pump. |
| 8 | T2OUT | output | Transmitter 2 (driver) output at RS-232 signal levels (typically ±9 V). |
| 9 | R2IN | input | Receiver 2 input accepting RS-232 levels, with an internal 5 kΩ pull-down resistor to GND. |
| 10 | R2OUT | tri_state | Receiver 2 output at CMOS logic levels, three-stated when EN is high. |
| 11 | NC | unconnected | No connect. |
| 12 | T2IN | input | Transmitter 2 (driver) input accepting TTL/CMOS levels. |
| 13 | T1IN | input | Transmitter 1 (driver) input accepting TTL/CMOS levels. |
| 14 | NC | unconnected | No connect. |
| 15 | R1OUT | tri_state | Receiver 1 output at CMOS logic levels, three-stated when EN is high. |
| 16 | R1IN | input | Receiver 1 input accepting RS-232 levels, with an internal 5 kΩ pull-down resistor to GND. |
| 17 | T1OUT | output | Transmitter 1 (driver) output at RS-232 signal levels (typically ±9 V). |
| 18 | GND | power_in | Ground pin, must be connected to 0 V. |
| 19 | VCC | power_in | Power supply input, 3.3 V ± 0.3 V. |
| 20 | SD | input | Active-low shutdown control: when low the charge pump is shut down and the transmitter outputs are disabled. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SSOP-20-208mil |
| 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 |
|---|---|---|---|---|---|---|---|
| VCC supply voltage (absolute maximum) | VCC | -0.3 | 6 | V | 4 | ||
| V+ (absolute maximum) | V+ | 14 | V | (VCC − 0.3 V) to +14 V | 4 | ||
| V− (absolute maximum) | V− | -14 | 0.3 | V | +0.3 V to −14 V | 4 | |
| Input voltage TIN (absolute maximum) | TIN | -0.3 | V | −0.3 V to (V+, +0.3 V) | 4 | ||
| Receiver input voltage RIN (absolute maximum) | RIN | -30 | 30 | V | ±30 V | 4 | |
| Transmitter output voltage TOUT (absolute maximum) | TOUT | -15 | 15 | V | ±15 V | 4 | |
| Receiver output voltage ROUT (absolute maximum) | ROUT | -0.3 | V | −0.3 V to (VCC + 0.3 V) | 4 | ||
| Power dissipation (absolute maximum) | 450 | mW | Derates 6 mW/°C above 50°C | 4 | |||
| Operating temperature range (Industrial, A version) | -40 | 85 | °C | Industrial (A version) | 4 | ||
| Storage temperature range | -65 | 150 | °C | 4 | |||
| Operating voltage range | VCC | 3 | 3.3 | 5.5 | V | 3 | |
| VCC power supply current | 1.3 | 3 | mA | No load | 3 | ||
| VCC power supply current | 8 | 12 | mA | RL = 3 kΩ to GND | 3 | ||
| Shutdown supply current | 0.01 | 0.5 | μA | 3 | |||
| Input logic threshold low | VINL | 0.8 | V | TIN | 3 | ||
| Input logic threshold high | VINH | 2 | V | TIN | 3 | ||
| CMOS output voltage low | VOL | 0.4 | V | IOUT = 1.6 mA | 3 | ||
| Logic pull-up current | 5 | 10 | μA | TIN = GND to VCC1 | 3 | ||
| Output leakage current (receivers disabled) | -10 | 10 | μA | Receivers disabled | 3 | ||
| EIA-232 input voltage range | -30 | 30 | V | 3 | |||
| EIA-232 input threshold low | 0.6 | 1.2 | V | 3 | |||
| EIA-232 input threshold high | 1.6 | 2.4 | V | 3 | |||
| EIA-232 input resistance | 3 | 5 | 7 | kΩ | 3 | ||
| Output voltage swing (RS-232) | -5 | 5.2 | V | VCC = 3.3 V, all transmitter outputs loaded with 3 kΩ to ground | 3 | ||
| Output voltage swing (RS-562) | -3.7 | 3.7 | V | VCC = 3.0 V | 3 | ||
| Transmitter output resistance | 300 | Ω | VCC = 0 V, VOUT = ±2 V | 3 | |||
| RS-232 output short-circuit current | -15 | 15 | mA | 3 | |||
| Transmitter output leakage current | -25 | 25 | μA | SD = low, VOUT = 12 V | 3 | ||
| Maximum data rate | 460 | kbps | VCC = 3.3 V, RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF, one Tx switching | 3 | |||
| Receiver propagation delay TPHL | TPHL | 0.4 | 1 | μs | 3 | ||
| Receiver propagation delay TPLH | TPLH | 0.4 | 1 | μs | 3 | ||
| Transmitter propagation delay | 0.3 | 1.2 | μs | RL = 3 kΩ, CL = 1000 pF | 3 | ||
| Receiver output enable time | 200 | ns | 3 | ||||
| Receiver output disable time | 200 | ns | 3 | ||||
| Transmitter skew | 30 | ns | 3 | ||||
| Receiver skew | 300 | ns | 3 | ||||
| Transition region slew rate | 5.5 | 10 | 30 | V/μs | Measured from +3 V to −3 V or −3 V to +3 V, VCC = +3.3 V; RL = 3 kΩ, CL = 1000 pF, TA = 25°C | 3 | |
| Thermal impedance θJA (RS-20, 4-layer test board) | θJA | 83 | °C/W | RS-20 (4-Layer Test Board) | 4 | ||
| EIA-232 input hysteresis | 0.4 | V | 3 |
CAD (KiCad official)
- Symbol:
ADM3222ARSZ-REEL7 - Footprint:
Package_SO:SSOP-20_5.3x7.2mm_P0.65mm - 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files:
adm3222arsz-reel7-etched.step/adm3222arsz-reel7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);adm3222arsz-reel7.step/adm3222arsz-reel7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (16 pp, sha256
cd33ca7a96faf2c0, retrieved 2026-10-29, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).