component
ICL3225EIAZ
Public Made by Adomby adom
RENESAS 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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Contents
README
markdownICL3225EIAZ
RENESAS · RS232 ICs · SSOP-20-208mil
ICL3225EIAZ from RENESAS, 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 | READY | output | Active high output that indicates when the device is ready to transmit (V- ≤ -4V). |
| 2 | C1+ | passive | External capacitor (voltage doubler) is connected to this lead. |
| 3 | V+ | power_out | Internally generated positive transmitter supply (+5.5V). |
| 4 | C1- | passive | External capacitor (voltage doubler) is connected to this lead. |
| 5 | C2+ | passive | External capacitor (voltage inverter) is connected to this lead. |
| 6 | C2- | passive | External capacitor (voltage inverter) is connected to this lead. |
| 7 | V- | power_out | Internally generated negative transmitter supply (-5.5V). |
| 8 | T2OUT | output | ±15kV ESD protected, RS-232 level (nominally ±5.5V) transmitter output. |
| 9 | R2IN | input | ±15kV ESD protected, RS-232 compatible receiver input. |
| 10 | R2OUT | output | TTL/CMOS level receiver output. |
| 11 | INVALID | output | Active low output that indicates if no valid RS-232 levels are present on any receiver input. |
| 12 | T2IN | input | TTL/CMOS compatible transmitter input. |
| 13 | T1IN | input | TTL/CMOS compatible transmitter input. |
| 14 | FORCEON | input | Active high input to override automatic powerdown circuitry, keeping transmitters active (FORCEOFF must be high). |
| 15 | R1OUT | output | TTL/CMOS level receiver output. |
| 16 | R1IN | input | ±15kV ESD protected, RS-232 compatible receiver input. |
| 17 | T1OUT | output | ±15kV ESD protected, RS-232 level (nominally ±5.5V) transmitter output. |
| 18 | GND | power_in | Ground connection. |
| 19 | VCC | power_in | System power supply input (3.0V to 5.5V). |
| 20 | FORCEOFF | input | Active low to shut down transmitters and on-chip power supply, overriding automatic circuitry and FORCEON. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RENESAS |
| Package | SSOP-20-208mil |
| Category | Interface |
| 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 Current, Automatic Powerdown (max) | 1 | 10 | µA | All RIN open, FORCEON = GND, FORCEOFF = VCC; +25°C | 6 | ||
| Supply Current, Powerdown (max) | 1 | 10 | µA | FORCEOFF = GND; +25°C | 6 | ||
| Supply Current, Automatic Powerdown Disabled (max) | 0.3 | 1 | mA | All outputs unloaded, FORCEON = FORCEOFF = VCC; +25°C | 6 | ||
| Input Logic Threshold Low | 0.8 | V | TIN, FORCEON, FORCEOFF; Full | 6 | |||
| Input Logic Threshold High (VCC = 3.3V) | 2 | V | TIN, FORCEON, FORCEOFF; VCC = 3.3V; Full | 6 | |||
| Input Logic Threshold High (VCC = 5.0V) | 2.4 | V | TIN, FORCEON, FORCEOFF; VCC = 5.0V; Full | 6 | |||
| Input Leakage Current | -1 | 0.01 | 1 | µA | TIN, FORCEON, FORCEOFF; Full | 6 | |
| Output Voltage Low | 0.4 | V | IOUT = 1.6mA; Full | 6 | |||
| Input Voltage Range (RIN) | -25 | 25 | V | Full | 6 | ||
| Input Threshold Low (VCC = 3.3V) | 0.6 | 1.2 | V | VCC = 3.3V; +25°C | 6 | ||
| Input Threshold Low (VCC = 5.0V) | 0.8 | 1.5 | V | VCC = 5.0V; +25°C | 6 | ||
| Input Threshold High (VCC = 3.3V) | 1.5 | 2.4 | V | VCC = 3.3V; +25°C | 6 | ||
| Input Threshold High (VCC = 5.0V) | 1.8 | 2.4 | V | VCC = 5.0V; +25°C | 6 | ||
| Input Resistance | 3 | 5 | 7 | kΩ | +25°C | 6 | |
| Output Voltage Swing | 5 | 5.4 | V | All transmitter outputs loaded with 3kΩ to Ground; Full | 7 | ||
| Output Resistance | 300 | Ω | VCC = V+ = V- = 0V, transmitter output = ±2V; Full | 7 | |||
| Output Short-Circuit Current | -60 | 35 | 60 | mA | Full | 7 | |
| Output Leakage Current (transmitter) | -25 | 25 | µA | VOUT = ±12V, VCC = 0V or 3V to 5.5V, automatic powerdown or FORCEOFF = GND; Full | 7 | ||
| Receiver Input Threshold to INVALID High | -2.7 | 2.7 | V | See Figure 9; Full | 7 | ||
| Receiver Input Threshold to INVALID Low | -0.3 | 0.3 | V | See Figure 9; Full | 7 | ||
| INVALID, READY Output Voltage Low | 0.4 | V | IOUT = 1.6mA; Full | 7 | |||
| Receiver or Transmitter Edge to Transmitters Disabled Delay (tAUTOPWDN) | tAUTOPWDN | 15 | 30 | 60 | sec | (Note 6); Full | 7 |
| Maximum Data Rate | 250 | kbps | RL = 3kΩ, one transmitter switching, CL = 1000pF; Full | 7 | |||
| Maximum Data Rate | 1000 | kbps | VCC = 3V to 4.5V, CL = 250pF; Full | 7 | |||
| Transition Region Slew Rate | 24 | 150 | V/µs | VCC = 3.3V, RL = 3kΩ to 7kΩ, measured from 3V to -3V or -3V to 3V, CL = 150pF to 1000pF; +25°C | 7 | ||
| Absolute max: VCC to Ground | VCC | -0.3 | 6 | V | 6 | ||
| Absolute max: V+ to Ground | V+ | -0.3 | 7 | V | 6 | ||
| Absolute max: V- to Ground | V- | -7 | 0.3 | V | 6 | ||
| Absolute max: V+ to V- | 14 | V | 6 | ||||
| Absolute max: Input voltages TIN, FORCEOFF, FORCEON | -0.3 | 6 | V | 6 | |||
| Absolute max: Input voltage RIN | -25 | 25 | V | 6 | |||
| Absolute max: Output voltage TOUT | -13.2 | 13.2 | V | 6 | |||
| Maximum Junction Temperature (Plastic Package) | TJ | 150 | °C | 6 | |||
| Maximum Storage Temperature Range | -65 | 150 | °C | 6 | |||
| Supply voltage VCC (system power supply input) | VCC | 3 | 5.5 | V | 3 | ||
| Operating Temperature Range, ICL32xxEI | -40 | 85 | °C | 6 | |||
| Thermal resistance junction-to-ambient, 20 Ld SSOP (θJA) | θJA | 135 | °C/W | Typical, Note 5 (free air, low effective thermal conductivity test board) | 6 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | C2- External capacitor (voltage inverter) is connected to this lead. TIN TTL/CMOS compatible transmitter Inputs. | 3 |
CAD (KiCad official)
- Symbol:
ICL3225EIAZ - Footprint:
Package_SO:SSOP-20_5.3x7.2mm_P0.65mm - 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files:
icl3225eiaz-etched.step/icl3225eiaz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);icl3225eiaz.step/icl3225eiaz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: RENESAS datasheet (22 pp, sha256
2cb27d11ab8b2e42, retrieved 2026-10-20, tier: lcsc) - 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).