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BL1590

Public Made by Adom

by adom

BL(Shanghai Belling) RS-485/RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BL1590

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl1590.step / bl1590.glb are 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, primary claude-sonnet-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