component
ISL81487EIBZ-T
Public Made by Adomby adom
RENESAS RS-485 / RS-422 ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
ISL81487EIBZ-T
RENESAS · RS-485 / RS-422 ICs · SOIC-8
ISL81487EIBZ-T from RENESAS, in a SOIC-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 | RO | output | Receiver output: RO is high if A is at least 0.2V above B, low if A is at least 0.2V below B, and high if the inputs are open or floating, and it is high-impedance when RE is high. |
| 2 | RE | input | Receiver output enable: RO is enabled when RE is low and goes high-impedance when RE is high. |
| 3 | DE | input | Driver output enable: the driver outputs Y and Z are enabled when DE is high and are high-impedance when DE is low. |
| 4 | DI | input | Driver input: a low on DI forces output Y low and output Z high, and a high on DI forces Y high and Z low. |
| 5 | GND | power_in | Ground connection. |
| 6 | A/Y | bidirectional | Non-inverting RS-485/422 receiver input (A) when DE is low and non-inverting driver output (Y) when DE is high, with ±15kV HBM ESD protection on the RS-485 pin. |
| 7 | B/Z | bidirectional | Inverting RS-485/422 receiver input (B) when DE is low and inverting driver output (Z) when DE is high, with ±15kV HBM ESD protection on the RS-485 pin. |
| 8 | VCC | power_in | System power supply input, 4.5V to 5.5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RENESAS |
| Package | SOIC-8 |
| Category | Interface |
| 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 |
|---|---|---|---|---|---|---|---|
| Driver Differential VOUT (with load), R = 50Ω (RS-422) | VOD2 | 2 | 3 | V | R = 50Ω (RS-422), (Figure 1) | 4 | |
| Driver Differential VOUT (with load), R = 27Ω (RS-485) | VOD2 | 1.5 | 2.3 | 5 | V | R = 27Ω (RS-485), (Figure 1) | 4 |
| Change in Magnitude of Driver Differential VOUT for Complementary Output States | ΔVOD | 0.01 | 0.2 | V | R = 27Ω or 50Ω, (Figure 1) | 4 | |
| Driver Common-Mode VOUT | VOC | 3 | V | R = 27Ω or 50Ω, (Figure 1) | 4 | ||
| Change in Magnitude of Driver Common-Mode VOUT for Complementary Output States | ΔVOC | 0.01 | 0.2 | V | R = 27Ω or 50Ω, (Figure 1) | 4 | |
| Logic Input High Voltage | VIH | 2 | V | DE, DI, RE | 4 | ||
| Logic Input Low Voltage | VIL | 0.8 | V | DE, DI, RE | 4 | ||
| Logic Input Current | IIN1 | -2 | 2 | µA | DE, DI, RE | 4 | |
| Input Current (A/Y, B/Z), VIN = 12V | IIN2 | 140 | µA | DE = 0V, VCC = 4.5 to 5.5V, VIN = 12V | 4 | ||
| Input Current (A/Y, B/Z), VIN = -7V | IIN2 | -120 | µA | DE = 0V, VCC = 4.5 to 5.5V, VIN = -7V | 4 | ||
| Input Current (A/Y, B/Z), VIN = 12V, VCC = 0V | IIN2 | 180 | µA | DE = 0V, VCC = 0V, VIN = 12V | 4 | ||
| Input Current (A/Y, B/Z), VIN = -7V, VCC = 0V | IIN2 | -100 | µA | DE = 0V, VCC = 0V, VIN = -7V | 4 | ||
| Receiver Differential Threshold Voltage | VTH | -0.2 | 0.2 | V | -7V ≤ VCM ≤ 12V | 4 | |
| Receiver Output High Voltage | VOH | 3.5 | V | IO = -4mA, VID = 200mV | 4 | ||
| Receiver Output Low Voltage | VOL | 0.4 | V | IO = -4mA, VID = 200mV | 4 | ||
| Three-State (high impedance) Receiver Output Current | IOZR | -1 | 1 | µA | 0.4V ≤ VO ≤ 2.4V | 4 | |
| Receiver Input Resistance | RIN | 96 | kΩ | -7V ≤ VCM ≤ 12V | 4 | ||
| No-Load Supply Current (ISL81487E) | ICC | 400 | 500 | µA | DI, RE = 0V or VCC, DE = VCC | 5 | |
| No-Load Supply Current (ISL81487E) | ICC | 350 | 420 | µA | DI, RE = 0V or VCC, DE = 0V | 5 | |
| Driver Short-Circuit Current, VO = High or Low | IOSD1 | 35 | 250 | mA | DE = VCC, -7V ≤ VY or VZ ≤ 12V, (Note 4) | 5 | |
| Receiver Short-Circuit Current | IOSR | 7 | 85 | mA | 0V ≤ VO ≤ VCC | 5 | |
| Driver Input to Output Delay (ISL81487E) | tPLH, tPHL | 15 | 24 | 50 | ns | RDIFF = 54Ω, CL = 100pF, (Figure 2) | 5 |
| Driver Output Skew (ISL81487E) | tSKEW | 3 | 10 | ns | RDIFF = 54Ω, CL = 100pF, (Figure 2) | 5 | |
| Driver Differential Rise or Fall Time (ISL81487E) | tR, tF | 3 | 12 | 25 | ns | RDIFF = 54Ω, CL = 100pF, (Figure 2) | 5 |
| Driver Enable to Output High (ISL81487E) | tZH | 14 | 70 | ns | CL = 100pF, SW = GND, (Figure 2) | 5 | |
| Driver Enable to Output Low (ISL81487E) | tZL | 14 | 70 | ns | CL = 100pF, SW = VCC, (Figure 2) | 5 | |
| Driver Disable from Output High (ISL81487E) | tHZ | 44 | 70 | ns | CL = 15pF, SW = GND, (Figure 2) | 5 | |
| Driver Disable from Output Low (ISL81487E) | tLZ | 21 | 70 | ns | CL = 15pF, SW = VCC, (Figure 2) | 5 | |
| Receiver Input to Output Delay (ISL81487E) | tPLH, tPHL | 30 | 90 | 150 | ns | (Figure 4) | 5 |
| Receiver Enable to Output High (ISL81487E) | tZH | 9 | 50 | ns | CL = 15pF, SW = GND, (Figure 5) | 5 | |
| Receiver Enable to Output Low (ISL81487E) | tZL | 9 | 50 | ns | CL = 15pF, SW = VCC, (Figure 5) | 5 | |
| Receiver Disable from Output High (ISL81487E) | tHZ | 9 | 50 | ns | CL = 15pF, SW = GND, (Figure 5) | 5 | |
| Receiver Disable from Output Low (ISL81487E) | tLZ | 9 | 50 | ns | CL = 15pF, SW = VCC, (Figure 5) | 5 | |
| Maximum Data Rate (ISL81487E) | fMAX | 5 | Mbps | 5 | |||
| Supply voltage VCC | VCC | 4.5 | 5 | 5.5 | V | 10% tolerance supply; typicals at VCC = 5V, TA = 25°C | 4 |
| Operating temperature range | TA | -40 | 85 | °C | ISL8XXXIX temperature range | 4 | |
| VCC to Ground | VCC | 7 | V | 4 | |||
| Input/Output Voltages A/Y, B/Z | VA/Y, VB/Z | -8 | 12.5 | V | 4 | ||
| Maximum Junction Temperature (Plastic Package) | TJ | 150 | °C | 4 | |||
| Maximum Storage Temperature Range | TSTG | -65 | 150 | °C | 4 | ||
| Maximum Lead Temperature (Soldering) | TLEAD | 300 | °C | Soldering 10s (SOIC - lead tips only) | 4 | ||
| Thermal Resistance, junction to ambient, 8 Ld SOIC | θJA | 170 | °C/W | Typical; component mounted on low effective thermal conductivity test board in free air (Note 1) | 4 |
CAD (KiCad official)
- Symbol:
ISL81487EIBZ-T - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
isl81487eibz-t-etched.step/isl81487eibz-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);isl81487eibz-t.step/isl81487eibz-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: RENESAS datasheet (14 pp, sha256
ecfdf53c54fee927, retrieved 2026-10-19, 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).
# ISL81487EIBZ-T
**RENESAS** · RS-485 / RS-422 ICs · SOIC-8
ISL81487EIBZ-T from RENESAS, in a SOIC-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 | RO | output | Receiver output: RO is high if A is at least 0.2V above B, low if A is at least 0.2V below B, and high if the inputs are open or floating, and it is high-impedance when RE is high. |
| 2 | RE | input | Receiver output enable: RO is enabled when RE is low and goes high-impedance when RE is high. |
| 3 | DE | input | Driver output enable: the driver outputs Y and Z are enabled when DE is high and are high-impedance when DE is low. |
| 4 | DI | input | Driver input: a low on DI forces output Y low and output Z high, and a high on DI forces Y high and Z low. |
| 5 | GND | power_in | Ground connection. |
| 6 | A/Y | bidirectional | Non-inverting RS-485/422 receiver input (A) when DE is low and non-inverting driver output (Y) when DE is high, with ±15kV HBM ESD protection on the RS-485 pin. |
| 7 | B/Z | bidirectional | Inverting RS-485/422 receiver input (B) when DE is low and inverting driver output (Z) when DE is high, with ±15kV HBM ESD protection on the RS-485 pin. |
| 8 | VCC | power_in | System power supply input, 4.5V to 5.5V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RENESAS |
| Package | SOIC-8 |
| Category | Interface |
| 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 |
|---|---|---|---|---|---|---|---|
| Driver Differential VOUT (with load), R = 50Ω (RS-422) | VOD2 | 2 | 3 | | V | R = 50Ω (RS-422), (Figure 1) | 4 |
| Driver Differential VOUT (with load), R = 27Ω (RS-485) | VOD2 | 1.5 | 2.3 | 5 | V | R = 27Ω (RS-485), (Figure 1) | 4 |
| Change in Magnitude of Driver Differential VOUT for Complementary Output States | ΔVOD | | 0.01 | 0.2 | V | R = 27Ω or 50Ω, (Figure 1) | 4 |
| Driver Common-Mode VOUT | VOC | | | 3 | V | R = 27Ω or 50Ω, (Figure 1) | 4 |
| Change in Magnitude of Driver Common-Mode VOUT for Complementary Output States | ΔVOC | | 0.01 | 0.2 | V | R = 27Ω or 50Ω, (Figure 1) | 4 |
| Logic Input High Voltage | VIH | 2 | | | V | DE, DI, RE | 4 |
| Logic Input Low Voltage | VIL | | | 0.8 | V | DE, DI, RE | 4 |
| Logic Input Current | IIN1 | -2 | | 2 | µA | DE, DI, RE | 4 |
| Input Current (A/Y, B/Z), VIN = 12V | IIN2 | | | 140 | µA | DE = 0V, VCC = 4.5 to 5.5V, VIN = 12V | 4 |
| Input Current (A/Y, B/Z), VIN = -7V | IIN2 | | | -120 | µA | DE = 0V, VCC = 4.5 to 5.5V, VIN = -7V | 4 |
| Input Current (A/Y, B/Z), VIN = 12V, VCC = 0V | IIN2 | | | 180 | µA | DE = 0V, VCC = 0V, VIN = 12V | 4 |
| Input Current (A/Y, B/Z), VIN = -7V, VCC = 0V | IIN2 | | | -100 | µA | DE = 0V, VCC = 0V, VIN = -7V | 4 |
| Receiver Differential Threshold Voltage | VTH | -0.2 | | 0.2 | V | -7V ≤ VCM ≤ 12V | 4 |
| Receiver Output High Voltage | VOH | 3.5 | | | V | IO = -4mA, VID = 200mV | 4 |
| Receiver Output Low Voltage | VOL | | | 0.4 | V | IO = -4mA, VID = 200mV | 4 |
| Three-State (high impedance) Receiver Output Current | IOZR | -1 | | 1 | µA | 0.4V ≤ VO ≤ 2.4V | 4 |
| Receiver Input Resistance | RIN | 96 | | | kΩ | -7V ≤ VCM ≤ 12V | 4 |
| No-Load Supply Current (ISL81487E) | ICC | | 400 | 500 | µA | DI, RE = 0V or VCC, DE = VCC | 5 |
| No-Load Supply Current (ISL81487E) | ICC | | 350 | 420 | µA | DI, RE = 0V or VCC, DE = 0V | 5 |
| Driver Short-Circuit Current, VO = High or Low | IOSD1 | 35 | | 250 | mA | DE = VCC, -7V ≤ VY or VZ ≤ 12V, (Note 4) | 5 |
| Receiver Short-Circuit Current | IOSR | 7 | | 85 | mA | 0V ≤ VO ≤ VCC | 5 |
| Driver Input to Output Delay (ISL81487E) | tPLH, tPHL | 15 | 24 | 50 | ns | RDIFF = 54Ω, CL = 100pF, (Figure 2) | 5 |
| Driver Output Skew (ISL81487E) | tSKEW | | 3 | 10 | ns | RDIFF = 54Ω, CL = 100pF, (Figure 2) | 5 |
| Driver Differential Rise or Fall Time (ISL81487E) | tR, tF | 3 | 12 | 25 | ns | RDIFF = 54Ω, CL = 100pF, (Figure 2) | 5 |
| Driver Enable to Output High (ISL81487E) | tZH | | 14 | 70 | ns | CL = 100pF, SW = GND, (Figure 2) | 5 |
| Driver Enable to Output Low (ISL81487E) | tZL | | 14 | 70 | ns | CL = 100pF, SW = VCC, (Figure 2) | 5 |
| Driver Disable from Output High (ISL81487E) | tHZ | | 44 | 70 | ns | CL = 15pF, SW = GND, (Figure 2) | 5 |
| Driver Disable from Output Low (ISL81487E) | tLZ | | 21 | 70 | ns | CL = 15pF, SW = VCC, (Figure 2) | 5 |
| Receiver Input to Output Delay (ISL81487E) | tPLH, tPHL | 30 | 90 | 150 | ns | (Figure 4) | 5 |
| Receiver Enable to Output High (ISL81487E) | tZH | | 9 | 50 | ns | CL = 15pF, SW = GND, (Figure 5) | 5 |
| Receiver Enable to Output Low (ISL81487E) | tZL | | 9 | 50 | ns | CL = 15pF, SW = VCC, (Figure 5) | 5 |
| Receiver Disable from Output High (ISL81487E) | tHZ | | 9 | 50 | ns | CL = 15pF, SW = GND, (Figure 5) | 5 |
| Receiver Disable from Output Low (ISL81487E) | tLZ | | 9 | 50 | ns | CL = 15pF, SW = VCC, (Figure 5) | 5 |
| Maximum Data Rate (ISL81487E) | fMAX | 5 | | | Mbps | | 5 |
| Supply voltage VCC | VCC | 4.5 | 5 | 5.5 | V | 10% tolerance supply; typicals at VCC = 5V, TA = 25°C | 4 |
| Operating temperature range | TA | -40 | | 85 | °C | ISL8XXXIX temperature range | 4 |
| VCC to Ground | VCC | | | 7 | V | | 4 |
| Input/Output Voltages A/Y, B/Z | VA/Y, VB/Z | -8 | | 12.5 | V | | 4 |
| Maximum Junction Temperature (Plastic Package) | TJ | | | 150 | °C | | 4 |
| Maximum Storage Temperature Range | TSTG | -65 | | 150 | °C | | 4 |
| Maximum Lead Temperature (Soldering) | TLEAD | | | 300 | °C | Soldering 10s (SOIC - lead tips only) | 4 |
| Thermal Resistance, junction to ambient, 8 Ld SOIC | θJA | | 170 | | °C/W | Typical; component mounted on low effective thermal conductivity test board in free air (Note 1) | 4 |
## CAD (KiCad official)
- Symbol: `ISL81487EIBZ-T`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `isl81487eibz-t-etched.step` / `isl81487eibz-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `isl81487eibz-t.step` / `isl81487eibz-t.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [RENESAS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586173013771358208) (14 pp, sha256 `ecfdf53c54fee927`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/isl81487eibz-t-datasheet.pdf)