component
HCPL4503M
Public Made by Adomby adom
onsemi Logic Output Optoisolators, DIP-8. 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
markdownHCPL4503M
onsemi · Logic Output Optoisolators · DIP-8
HCPL4503M from onsemi, in a DIP-8. 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 | N/C | unconnected | No internal connection on the HCPL4503M; leave unconnected (Figure 1 schematic marks this pin N/C). |
| 2 | VF (anode) | input | LED anode input; the datasheet limits are DC/average forward input current of 25 mA per channel, peak forward current of 50 mA (50% duty, 1 ms), and recommended input current high level IFH of 6.3 to 20 mA. |
| 3 | VF (cathode) | input | LED cathode; reverse input voltage is rated at 5 V maximum per the absolute maximum ratings. |
| 4 | N/C | unconnected | No internal connection on the HCPL4503M; leave unconnected (Figure 1 schematic marks this pin N/C). |
| 5 | GND | power_in | Detector ground reference (common return for the output transistor and supply). |
| 6 | VO | output | Open-collector logic output; average output current is limited to 8 mA and output voltage to -0.5 V to 20 V, with VOL of 0.4 V maximum at IO = 3 mA. |
| 7 | N/C | unconnected | Not connected in the HCPL4503M (the base connection VB used on the 6N135M/6N136M is absent for improved noise immunity). |
| 8 | VCC | power_in | Detector supply voltage; recommended operating range is 4.5 V to 20.0 V, with an absolute maximum of 30 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | DIP-8 |
| Category | Optoisolators |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Storage Temperature | TSTG | -40 | 125 | °C | 4 | ||
| Operating Temperature | TOPR | -40 | 100 | °C | 4 | ||
| Junction Temperature | TJ | -40 | 125 | °C | 4 | ||
| Lead Solder Temperature | TSOL | 260 | °C | for 10 sec | 4 | ||
| DC/Average Forward Input Current | IF (avg) | 25 | mA | Each Channel | 4 | ||
| Peak Forward Input Current | IF (pk) | 50 | mA | 50% Duty Cycle, 1 ms P.W., Each Channel | 4 | ||
| Peak Transient Input Current | IF (trans) | 1 | A | Each Channel, <= 1 us P.W., 300 pps | 4 | ||
| Reverse Input Voltage | VR | 5 | V | Each Channel | 4 | ||
| Input Power Dissipation | PD | 45 | mW | Each Channel | 4 | ||
| Average Output Current | IO (avg) | 8 | mA | Each Channel | 4 | ||
| Peak Output Current | IO (pk) | 16 | mA | Each Channel | 4 | ||
| Supply Voltage | VCC | -0.5 | 30 | V | 4 | ||
| Output Voltage | VO | -0.5 | 20 | V | 4 | ||
| Output Power Dissipation | PD | 100 | mW | Each Channel | 4 | ||
| Supply Voltage | VCC | 4.5 | 20 | V | 4 | ||
| Ambient Operating Temperature | TA | 0 | 70 | °C | 4 | ||
| Input Current, Low Level | IFL | 0 | 250 | µA | 4 | ||
| Input Current, High Level | IFH | 6.3 | 20 | mA | 4 | ||
| Input Forward Voltage | VF | 1.45 | 1.7 | V | IF = 16 mA, TA = 25°C | 5 | |
| Input Forward Voltage | VF | 1.8 | V | IF = 16 mA | 5 | ||
| Input Reverse Breakdown Voltage | BVR | 5 | 21 | V | IR = 10 µA | 5 | |
| Logic High Output Current | IOH | 0.0007 | 0.5 | µA | IF = 0 mA, VO = VCC = 5.5 V, TA = 25°C | 5 | |
| Logic High Output Current | IOH | 0.0019 | 1 | µA | IF = 0 mA, VO = VCC = 15 V, TA = 25°C | 5 | |
| Logic High Output Current | IOH | 50 | µA | IF = 0 mA, VO = VCC = 15 V | 5 | ||
| Logic Low Supply Current | ICCL | 163 | 200 | µA | IF = 16 mA, VO = Open, VCC = 15 V | 5 | |
| Logic High Supply Current | ICCH | 0.0004 | 2 | µA | IF = 0 mA, VO = Open, VCC = 15 V | 5 | |
| Current Transfer Ratio | CTR | 19 | 38 | 50 | % | IF = 16 mA, VO = 0.4 V, VCC = 4.5 V, TA = 25°C | 6 |
| Current Transfer Ratio | CTR | 15 | % | IF = 16 mA, VCC = 4.5 V, VOL = 0.4 V | 6 | ||
| Logic LOW Output Voltage | VOL | 0.2 | 0.4 | V | IF = 16 mA, IO = 3 mA, VCC = 4.5 V, TA = 25°C | 6 | |
| Logic LOW Output Voltage | VOL | 0.18 | 0.5 | V | IF = 16 mA, IO = 2.4 mA, VCC = 4.5 V | 6 | |
| Propagation Delay Time to Logic LOW | tPHL | 0.25 | 0.8 | µs | TA = 25°C, RL = 1.9 kΩ, IF = 16 mA | 7 | |
| Propagation Delay Time to Logic LOW | tPHL | 1 | µs | RL = 1.9 kΩ, IF = 16 mA | 7 | ||
| Propagation Delay Time to Logic HIGH | tPLH | 0.26 | 0.8 | µs | TA = 25°C, RL = 1.9 kΩ, IF = 16 mA | 7 | |
| Propagation Delay Time to Logic HIGH | tPLH | 1 | µs | RL = 1.9 kΩ, IF = 16 mA | 7 | ||
| Common Mode Transient Immunity at Logic High | /CMH/ | 15000 | 50000 | V/µs | IF = 0 mA, VCM = 1,500 VP-P, RL = 4.1 kΩ, TA = 25°C | 7 | |
| Common Mode Transient Immunity at Logic Low | /CML/ | 15000 | 50000 | V/µs | IF = 0 mA, VCM = 1,500 VP-P, RL = 4.1 kΩ, TA = 25°C | 7 | |
| Withstand Isolation Test Voltage | VISO | 5000 | VACRMS | RH <= 50%, II-O <= 10 µA, t = 1 minute, f = 50 Hz | 8 | ||
| Temperature Coefficient of Forward Voltage | ΔVF/ΔTA | -1.7 | mV/°C | IF = 16 mA | 5 | ||
| Capacitance (Input to Output) | CI-O | 1 | pF | f = 1 MHz, VI-O = 0 VDC | 8 |
CAD (KiCad official)
- Symbol:
HCPL4503M - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
hcpl4503m-etched.step/hcpl4503m-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hcpl4503m.step/hcpl4503m.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (20 pp, sha256
9d9a776e6e678973, retrieved 2026-10-16, 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).