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MAX485EPA

Public Made by Adom

by adom

lingxingic RS-485 / RS-422 ICs, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MAX485EPA

lingxingic · RS-485 / RS-422 ICs · DIP-8

MAX485EPA from lingxingic, 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 R output Receiver output: driven high when VID ≥ VIT+ and low when VID ≤ VIT- with /RE low, and high-impedance when /RE is high.
2 /RE input Active-low receiver enable: the receiver is enabled when /RE is low, and R goes high-impedance when /RE is high.
3 DE input Driver enable: the driver is enabled when DE is high, and both A and B go high-impedance when DE is low.
4 D input Driver input: with DE high, a high on D drives A high and B low, and a low on D drives A low and B high; the recommended high-level input is 2 V to VCC and the low-level input is 0 V to 0.8 V.
5 GND power_in Ground reference for the device.
6 A bidirectional Non-inverting RS-485 bus terminal shared by the receiver non-inverting input and the driver non-inverting output; bus common-mode range is -7 V to 12 V.
7 B bidirectional Inverting RS-485 bus terminal shared by the receiver inverting input and the driver inverting output; bus common-mode range is -7 V to 12 V.
8 VCC power_in Supply pin; recommended supply range is 3 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer lingxingic
Package DIP-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
电源电压 (supply voltage) VCC -0.3 7 V 5
输入电压 (input voltage, D, DE, /RE) VI -0.3 V 5
输入/输出电压 (input/output voltage, A, B) VI/O -15 15 V A, B pins 5
输入/输出电压 (input/output voltage, R) VI/O -0.3 V R pin 5
ESD HBM (bus pins A, B) -15 15 kV HBM mode, bus pins A, B 5
ESD HBM (all other pins) -15 15 kV HBM mode, all other pins 5
电源电压 (supply voltage) VCC 3 5.5 V 5
共模电压 (common-mode voltage) VCM -7 12 V 5
高电平输入电压 (high-level input voltage) VIH 2 V driver input, driver enable and receiver enable 5
低电平输入电压 (low-level input voltage) VIL 0 0.8 V 5
差分输入电压 (differential input voltage) VID -7 12 V 5
差分负载电阻 (differential load resistance) RL 54 Ω printed as >54 Ω 5
工作温度 (operating temperature) Tamb -40 85 ℃ 5
贮存温度 (storage temperature) Tstg -65 150 ℃ 5
工作电压 (operating voltage) VCC 3 5.5 V 6
静态电流 (static supply current) ICC 1.9 2.35 mA DE=VCC, /RE=GND, no load 6
静态电流 (static supply current) ICC 0.47 0.6 mA DE=VCC, /RE=VCC, no load 6
静态电流 (static supply current) ICC 1.7 2.05 mA DE=GND, /RE=GND, no load 6
静态电流 (static supply current) ICC 0.001 mA DE=GND, /RE=VCC, no load 6
差分输出电压幅度 (differential output voltage magnitude) /VOD/ 2.1 3.5 V RL=60Ω @VA&VB(-7～12V), VCC=4.5～5.5V, Fig 1A 6
差分输出电压幅度 (differential output voltage magnitude) /VOD/ 1.5 2.2 V RL=60Ω @VA&VB(-7～12V), VCC=3.0～3.6V 6
差分输出电压幅度 (differential output voltage magnitude) /VOD/ 2 3.6 V RL=54Ω, VCC=5V, Fig 1B 6
差分输出电压幅度 (differential output voltage magnitude) /VOD/ 1.5 1.9 V RL=54Ω, VCC=3V 6
差分输出电压幅度 (differential output voltage magnitude) /VOD/ 2.7 4 V RL=100Ω, VCC=5V 6
差分输出电压幅度 (differential output voltage magnitude) /VOD/ 2 2.3 V RL=100Ω, VCC=3V 6
差分输出电压幅度差值 (differential output voltage magnitude change) ∆/VOD/ -50 2 50 mV RL=54Ω, VCC=5V, CL=50pF 6
稳态共模输出电压 (steady-state common-mode output voltage) VOC(SS) 1 3 V centre of two 27Ω load resistors 6
短路输出电流 (short-circuit output current) /IOS/ -250 110 250 mA VA/VB: -7～12V 6
总线引脚 A, B 短路电流 (bus pins A, B short-circuit current) 150 mA 6
正向差分输入电压阈值 (positive differential input threshold) VIT+ -120 -40 mV VA/VB: -7～12V 6
负向差分输入电压阈值 (negative differential input threshold) VIT- -220 -170 mV VA/VB: -7～12V 6
输出高电平电压 (output high voltage) VOH 3 4.6 V IOH=-8mA 6
输出低电平电压 (output low voltage) VOL 0.4 V IOL=8mA 6
高阻输出电流 (high-impedance output current) IOZ -1 1 uA VO=0/VCC, /RE=VCC 6
总线输入电流 (bus input current, driver disabled) IIN 120 uA VCC=4.5～5.5 or VCC=0, DE=0V; VI=12V 6
总线输入电流 (bus input current, driver disabled) IIN -110 uA VCC=4.5～5.5 or VCC=0, DE=0V; VI=-7V 6
总线输入阻抗 (bus input impedance) RA/RB 96 KΩ VA=-7V, VB=12V and VA=12V, VB=-7V 6
逻辑输入高电压 (logic input high voltage) VIH 2 V DI, DE, /RE 6
逻辑输入低电压 (logic input low voltage) VIL 0.8 V 6
输入漏电 (input leakage current) Ii -5 5 uA 6
最大数据速率 (maximum data rate) fMAX 10 Mbps VOD≥±1.5V, RL=54Ω, CL=100pF (Fig 2) 7
关闭时间 (driver disable time, high) tPHZ 17 50 ns CL=15pF, SW2 closed, Fig 4 7
关闭时间 (driver disable time, low) tPLZ 20 50 ns CL=15pF, SW1 closed 7
传输延迟 (driver propagation delay) tPHL, tPLH 15 30 ns 7
驱动器通道间偏斜 (driver pulse skew) /tPHL- tPLH/ tSK(P) 20 ns 7
启动时间 (driver enable time, high) tPZH 36 45 ns CL=100pF，RX 使能，SW2 闭合 7
启动时间 (driver enable time, high, RX disabled) tPZH 2400 3200 ns CL=100pF，RX 禁用，SW2 闭合 7
启动时间 (driver enable time, low) tPZL 21 45 ns CL=100pF，RX 使能，SW1 闭合 7
启动时间 (driver enable time, low, RX disabled) tPZL 2400 3200 ns CL=100pF，RX 禁用，SW1 闭合 7
关闭时间 (receiver disable time, high) tPHZ 30 60 ns SW2 closed, Fig 6 7
关闭时间 (receiver disable time, low) tPLZ 27 60 ns SW1 closed 7
传播延迟时间 (receiver propagation delay) tPHL, tPLH 28 50 ns 7
接收器通道间偏斜 (receiver pulse skew) /tPHL-tPLH/ tSK(P) 15 ns 7
启动时间 (receiver enable time, high, TX disabled) tPZH 2500 3200 ns TX 禁用，SW2 闭合 7
启动时间 (receiver enable time, low) tPZL 24 35 ns TX 使能，SW1 闭合 7
启动时间 (receiver enable time, low, TX disabled) tPZL 2400 3200 ns TX 禁用，SW1 闭合 7

CAD (KiCad official)

  • Symbol: MAX485EPA
  • Footprint: Package_DIP:DIP-8_W7.62mm
  • 3D model: DIP-8 (KiCad packages3D, STEP)
  • 3D model files: max485epa-etched.step / max485epa-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max485epa.step / max485epa.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: lingxingic datasheet (13 pp, sha256 657088f4e3af8fd6, retrieved 2026-10-16, 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-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