component
BL1590
Public Made by Adomby adom
BL(Shanghai Belling) RS-485/RS-422 ICs, SOP-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
markdownBL1590
BL(Shanghai Belling) · RS-485/RS-422 ICs · SOP-8
BL1590 from BL(Shanghai Belling), in a SOP-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, driven high when A-B > -10mV or when the inputs are open/shorted, low when A-B < -200mV, and High-Z when /RE is high. |
| 2 | /RE | input | Receiver output enable: RO is active when /RE is low and High-Z when /RE is high. |
| 3 | DE | input | Driver output enable: driver outputs are active when DE is high and High-Z when DE is low. |
| 4 | DI | input | Driver input, with VIH min 2.0V and VIL max 0.8V. |
| 5 | GND | power_in | Ground. |
| 6 | A | bidirectional | Non-inverting receiver input and non-inverting driver output, with ±13V absolute maximum voltage and ±15kV IEC 61000-4-2 contact ESD protection. |
| 7 | B | bidirectional | Inverting receiver input and inverting driver output, with ±13V absolute maximum voltage and ±15kV IEC 61000-4-2 contact ESD protection. |
| 8 | VCC | power_in | Power supply, operating range 3.0V to 5.5V with absolute maximum of +7V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL(Shanghai Belling) |
| Package | SOP-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 |
|---|---|---|---|---|---|---|---|
| Supply voltage (abs max) | VCC | 7 | V | 3 | |||
| Control input voltage | /RE, DE | -0.3 | V | to VCC+0.3 V | 3 | ||
| Driver input voltage | DI | -0.3 | V | to VCC+0.3 V | 3 | ||
| Driver output voltage | A, B | -13 | 13 | V | 3 | ||
| Receiver input voltage | A, B | -13 | 13 | V | 3 | ||
| Receiver output voltage | RO | -0.3 | V | to VCC+0.3 V | 3 | ||
| Operating temperature range | -40 | 125 | °C | 3 | |||
| Operating supply voltage | VCC | 3 | 5.5 | V | TA=-40°C to +125°C | 3 | |
| Differential driver output | VOD2 | 2.7 | 3.4 | V | VCC=5V, Fig 1, R=27Ω | 3 | |
| Differential driver output | VOD2 | 1.5 | 1.8 | V | VCC=3V, Fig 1, R=27Ω | 3 | |
| Change in magnitude of VOD | ΔVOD | -0.2 | 0.2 | V | Fig 1, R=27Ω | 3 | |
| Driver common-mode output voltage | VOC | 3 | V | Fig 1, R=27Ω; printed VCC/2 to 3.0 | 3 | ||
| Change in magnitude of VOC | ΔVOC | -0.2 | 0.2 | V | Fig 1, R=27Ω | 3 | |
| Input high voltage | VIH | 2 | V | DE, DI, /RE | 3 | ||
| Input low voltage | VIL | 0.8 | V | DE, DI, /RE | 3 | ||
| DI input hysteresis | VHYS | 100 | mV | 3 | |||
| Input current (A, B) | IIN4 | 800 | µA | DE=GND, VCC=GND or VCC, VIN=12V | 3 | ||
| Input current (A, B) | IIN4 | -800 | µA | DE=GND, VCC=GND or VCC, VIN=-7V | 3 | ||
| Driver short-circuit output current | IOSD | -250 | 250 | mA | A Pin Short to B Pin | 3 | |
| Receiver differential threshold voltage | VTH | -200 | -125 | -10 | mV | -7V≤VCM≤12V | 3 |
| Receiver input hysteresis | ΔVTH | 25 | mV | 4 | |||
| Receiver output high voltage | VOH | 4 | V | VCC=5V, IO=-8mA | 4 | ||
| Receiver output high voltage | VOH | 2.45 | V | VCC=3V, IO=-4mA | 4 | ||
| Receiver output low voltage | VOL | 0.4 | V | VCC=5V, IO=8mA | 4 | ||
| Receiver three-state output current | IOZR | -1 | 1 | µA | 4 | ||
| Receiver input resistance | RIN | 12 | kΩ | -7V≤VCM≤12V | 4 | ||
| Receiver output short-circuit current | IOSR | -100 | 100 | mA | 0V≤VRO≤VCC | 4 | |
| Supply current | ICC | 1.5 | 2 | mA | No load, /RE=DI=GND or VCC, DE=VCC | 4 | |
| Supply current | ICC | 1.2 | 2 | mA | No load, /RE=DI=GND or VCC, DE=GND | 4 | |
| Shutdown supply current | ISHDN | 2 | µA | DE=GND, /RE=VCC, DI=VCC or GND | 4 | ||
| Driver propagation delay low-to-high | tDPLH | 11 | 28 | ns | Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF | 4 | |
| Driver propagation delay high-to-low | tDPHL | 16 | 35 | ns | Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF | 4 | |
| Driver output skew /tDPLH-tDPHL/ | tDSKEW | 5 | ns | Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF | 4 | ||
| Driver rise/fall time | tDR, tDF | 6.5 | ns | Fig 3 and 5, RDIFF=54Ω, CL1=CL2=100pF | 4 | ||
| Maximum data rate | FMAX | 16 | Mbps | 4 | |||
| Driver enable to output high | tDZH | 25 | 50 | ns | Fig 4 and 6, CL=100pF, S2 Closed | 4 | |
| Driver enable to output low | tDZL | 28 | 80 | ns | Fig 4 and 6, CL=100pF, S1 Closed | 4 | |
| Driver disable time from low | tDLZ | 22 | 45 | ns | Fig 4 and 6, CL=15pF, S1 Closed | 4 | |
| Driver disable time from high | tDHZ | 21 | 80 | ns | Fig 4 and 6, CL=15pF, S2 Closed | 5 | |
| Receiver propagation delay | tRPLH, tRPHL | 45 | 70 | ns | Fig 7 and 9, /VID/≥2.0V; rise and fall time of VID ≤15ns | 5 | |
| Receiver skew /tRPLH-tRPHL/ | tRSKD | 5 | ns | Fig 7 and 9, /VID/≥2.0V; rise and fall time of VID ≤15ns | 5 | ||
| Receiver enable to output low | tRZL | 12 | 25 | ns | Fig 2 and 8, CRL=15pF, S1 Closed | 5 | |
| Receiver enable to output high | tRZH | 8 | 25 | ns | Fig 2 and 8, CRL=15pF, S2 Closed | 5 | |
| Receiver disable from low | tRLZ | 9 | 25 | ns | Fig 2 and 8, CRL=15pF, S1 Closed | 5 | |
| Receiver disable from high | tRHZ | 10 | 25 | ns | Fig 2 and 8, CRL=15pF, S2 Closed | 5 | |
| Shutdown time | tSHDN | 500 | ns | 5 | |||
| Driver enable from shutdown to output high | tDZH(SHDN) | 3 | 5 | µs | Fig 4 and 6, CL=100pF, S2 Closed | 5 | |
| Driver enable from shutdown to output low | tDZL(SHDN) | 3 | 5 | µs | Fig 4 and 6, CL=100pF, S1 Closed | 5 | |
| Receiver enable from shutdown to output high | tRZH(SHDN) | 3 | 5 | µs | Fig 2 and 8, CRL=15pF, S2 Closed | 5 | |
| Receiver enable from shutdown to output low | tRZL(SHDN) | 3 | 5 | µs | Fig 2 and 8, CRL=15pF, S1 Closed | 5 |
CAD (KiCad official)
- Symbol:
BL1590 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
bl1590-etched.step/bl1590-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl1590.step/bl1590.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL(Shanghai Belling) datasheet (7 pp, sha256
a00096f54ad6a8a5, retrieved 2026-10-22, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).