component
ISL81487LIBZ-T
Public Made by Adomby adom
Intersil(Renesas Electronics) RS-485/RS-422 ICs, SOIC-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
markdownISL81487LIBZ-T
Intersil(Renesas Electronics) · RS-485/RS-422 ICs · SOIC-8
ISL81487LIBZ-T from Intersil(Renesas Electronics), 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 > B by at least 0.2V, low if A < B by 0.2V or more, and high if A and B are unconnected (floating). |
| 2 | RE | input | Receiver output enable: RO is enabled when RE is low and is high impedance when RE is high. |
| 3 | DE | input | Driver output enable: 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 Z high, and a high on DI forces Y high and Z low. |
| 5 | GND | power_in | Ground connection. |
| 6 | A/Y | bidirectional | 15kV HBM ESD protected RS-485/422-level noninverting receiver input (A) when DE = 0 and noninverting driver output (Y) when DE = 1. |
| 7 | B/Z | bidirectional | 15kV HBM ESD protected RS-485/422-level inverting receiver input (B) when DE = 0 and inverting driver output (Z) when DE = 1. |
| 8 | VCC | power_in | System power supply input, 4.5V to 5.5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Intersil(Renesas Electronics) |
| Package | SOIC-8 |
| Category | Interface ICs |
| 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) | VOD2 | 2 | 3 | V | R = 50Ω (RS-422), (Figure 1) | 4 | |
| Driver Differential VOUT (with Load) | 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 | VOD | 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 | VOC | 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) | IIN2 | 140 | µA | DE = 0V, VCC = 4.5 to 5.5V, VIN = 12V | 4 | ||
| Input Current (A/Y, B/Z) | IIN2 | -120 | µA | DE = 0V, VCC = 4.5 to 5.5V, VIN = -7V | 4 | ||
| Input Current (A/Y, B/Z) | IIN2 | 180 | µA | DE = 0V, VCC = 0V, VIN = 12V | 4 | ||
| Input Current (A/Y, B/Z) | 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 | µA | 0.4V ≤ VO ≤ 2.4V | 4 | ||
| Receiver Input Resistance | RIN | 96 | kΩ | -7V ≤ VCM ≤ 12V | 4 | ||
| No-Load Supply Current (ISL8487E, ISL81487L) | ICC | 160 | 200 | µA | DI, RE = 0V or VCC, DE = VCC | 5 | |
| No-Load Supply Current (ISL8487E, ISL81487L) | ICC | 120 | 145 | µA | DI, RE = 0V or VCC, DE = 0V | 5 | |
| Shutdown Supply Current | ISHDN | 0.5 | 8 | µA | DE = 0V, RE = VCC, DI = 0V or VCC | 5 | |
| Driver Short-Circuit Current, VO = High or Low | IOSD1 | 35 | 250 | mA | DE = VCC, -7V ≤ VY or VZ ≤ 12V, (Note 9) | 5 | |
| Receiver Short-Circuit Current | IOSR | 7 | 85 | mA | 0V ≤ VO ≤ VCC | 5 | |
| Driver Input to Output Delay (ISL81487L) | tPLH, tPHL | 150 | 650 | 1200 | ns | RDIFF = 54Ω, CL = 100pF, (Figure 2) | 6 |
| Driver Output Skew (ISL81487L) | tSKEW | 160 | 600 | ns | RDIFF = 54Ω, CL = 100pF, (Figure 2) | 6 | |
| Driver Differential Rise or Fall Time (ISL81487L) | tR, tF | 250 | 900 | 1200 | ns | RDIFF = 54Ω, CL = 100pF, (Figure 2) | 6 |
| Driver Enable to Output High (ISL81487L) | tZH | 100 | 1000 | 1500 | ns | CL = 100pF, SW = GND, (Figure 3, Note 10) | 6 |
| Driver Enable to Output Low (ISL81487L) | tZL | 100 | 1000 | 1500 | ns | CL = 100pF, SW = VCC, (Figure 3, Note 10) | 6 |
| Driver Disable from Output High (ISL81487L) | tHZ | 150 | 750 | 1500 | ns | CL = 15pF, SW = GND, (Figure 3) | 6 |
| Driver Disable from Output Low (ISL81487L) | tLZ | 150 | 750 | 1500 | ns | CL = 15pF, SW = VCC, (Figure 3) | 6 |
| Receiver Input to Output Delay (ISL81487L) | tPLH, tPHL | 30 | 175 | 250 | ns | (Figure 4) | 6 |
| Receiver Enable to Output High (ISL81487L) | tZH | 10 | 50 | ns | CL = 15pF, SW = GND, (Figure 5, Note 11) | 6 | |
| Receiver Enable to Output Low (ISL81487L) | tZL | 10 | 50 | ns | CL = 15pF, SW = VCC, (Figure 5, Note 11) | 6 | |
| Receiver Disable from Output High (ISL81487L) | tHZ | 10 | 50 | ns | CL = 15pF, SW = GND, (Figure 5) | 6 | |
| Receiver Disable from Output Low (ISL81487L) | tLZ | 10 | 50 | ns | CL = 15pF, SW = VCC, (Figure 5) | 6 | |
| Maximum Data Rate (ISL81487L) | fMAX | 250 | kbps | 6 | |||
| Time to Shutdown (ISL81487L) | tSHDN | 50 | 140 | 600 | ns | (Note 12) | 6 |
| Driver Enable from Shutdown to Output High (ISL81487L) | tZH(SHDN) | 1100 | 2000 | ns | CL = 100pF, SW = GND, (Figure 3, Notes 12 and 13) | 6 | |
| Driver Enable from Shutdown to Output Low (ISL81487L) | tZL(SHDN) | 1000 | 2000 | ns | CL = 100pF, SW = VCC, (Figure 3, Notes 12 and 13) | 6 | |
| Receiver Enable from Shutdown to Output High (ISL81487L) | tZH(SHDN) | 900 | 2000 | ns | CL = 15pF, SW = GND, (Figure 3, Notes 12 and 14) | 6 | |
| Receiver Enable from Shutdown to Output Low (ISL81487L) | tZL(SHDN) | 900 | 2000 | ns | CL = 15pF, SW = VCC, (Figure 3, Notes 12 and 14) | 6 | |
| Supply voltage VCC | VCC | 4.5 | 5.5 | V | Test Conditions: VCC = 4.5V to 5.5V | 4 | |
| Operating Temperature Range (ISL8XXXIX) | -40 | 85 | °C | 4 | |||
| VCC to Ground | VCC | 7 | V | 4 | |||
| Input Voltages DI, DE, RE | -0.5 | V | Maximum is VCC + 0.5V (not numeric) | 4 | |||
| Input/Output Voltages A/Y, B/Z | -8 | 12.5 | V | 4 | |||
| Output Voltage RO | -0.5 | V | Maximum is VCC + 0.5V (not numeric) | 4 | |||
| Maximum Junction Temperature (Plastic Package) | TJ | 150 | °C | 4 | |||
| Maximum Storage Temperature Range | -65 | 150 | °C | 4 | |||
| Maximum Lead Temperature (Soldering 10s) | 300 | °C | 10s, SOIC lead tips only | 4 | |||
| Thermal Resistance JA, 8 Ld SOIC Package | θJA | 170 | °C/W | Typical, Note 5 | 4 |
CAD (KiCad official)
- Symbol:
ISL81487LIBZ-T - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
isl81487libz-t-etched.step/isl81487libz-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);isl81487libz-t.step/isl81487libz-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Intersil(Renesas Electronics) datasheet (16 pp, sha256
32d5fa1f812628bf, retrieved 2026-10-28, 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).