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MAX3077EASA+

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Analog Devices Inc Maxim Integrated RS-485 / RS-422 ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MAX3077EASA+

Analog Devices Inc Maxim Integrated · RS-485 / RS-422 ICs · SOIC-8

MAX3077EASA+ from Analog Devices Inc Maxim Integrated, 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 VCC power_in Positive supply, VCC = 3.3V ±10%; bypass VCC to GND with a 0.1µF capacitor.
2 RO output Receiver output: when (A - B) ≥ -50mV, RO is high; when (A - B) ≤ -200mV, RO is low.
3 DI input Driver input: a high on DI forces Y high and Z low, and a low on DI forces Y low and Z high.
4 GND power_in Ground.
5 Y output Noninverting driver output; drivers are output short-circuit current limited and thermally shut down.
6 Z output Inverting driver output; drivers are output short-circuit current limited and thermally shut down.
7 B input Inverting receiver input with a 1/8-unit load (96kΩ) and a -8V to +13V receiver input voltage range.
8 A input Noninverting receiver input with a 1/8-unit load (96kΩ) and a -8V to +13V receiver input voltage range.

Key specifications

Parameter Value
Manufacturer Analog Devices Inc Maxim Integrated
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
Differential driver output voltage (RS-422 load) VOD 2 V RL = 100Ω (RS422), Figure 1 2
Differential driver output voltage (RS-485 load) VOD 1.5 V RL = 54Ω (RS485), Figure 1 2
Change in magnitude of differential output voltage ΔVOD 0.2 V RL = 100Ω or 54Ω, Figure 1 (Note 2) 2
Driver common-mode output voltage VOC 3 V RL = 100Ω or 54Ω, Figure 1 2
Change in magnitude of common-mode voltage ΔVOC 0.2 V RL = 100Ω or 54Ω, Figure 1 (Note 2) 2
Input high voltage VIH 2 V DE, DI, RE, TXP, RXP, H/F 2
Input low voltage VIL 0.8 V DE, DI, RE, TXP, RXP, H/F 2
Input hysteresis VHYS 100 mV DE, DI, RE, TXP, RXP, H/F 2
Input current IIN1 -1 1 µA DE, DI, RE 2
Input impedance (first transition) 1 10 kΩ First Transition DE 2
Output leakage (Y and Z), full duplex 125 µA Full Duplex IO, DE = GND, VCC = GND or 3.6V, VIN = +12V 2
Output leakage (Y and Z), full duplex -100 µA Full Duplex IO, DE = GND, VCC = GND or 3.6V, VIN = -7V 2
Driver short-circuit output current IOSD 40 250 mA 0 ≤ VOUT ≤ 12V (Note 3) 3
Driver short-circuit output current IOSD -250 -40 mA -7V ≤ VOUT ≤ VCC (Note 3) 3
Driver short-circuit foldback output current IOSDF 20 mA (VCC - 1V) ≤ VOUT ≤ 12V (Note 3) 3
Driver short-circuit foldback output current IOSDF -20 mA -7V ≤ VOUT ≤ 1V (Note 3) 3
Thermal-shutdown threshold TTS 175 °C 3
Thermal-shutdown hysteresis TTSH 15 °C 3
Input current (A and B) IA, B 125 µA DE = GND, VCC = GND or 3.6V, VIN = +12V 3
Input current (A and B) IA, B -100 µA DE = GND, VCC = GND or 3.6V, VIN = -7V 3
Receiver differential threshold voltage VTH -200 -125 -50 mV -7V ≤ VCM ≤ 12V 3
Receiver input hysteresis ΔVTH 15 mV VA + VB = 0V 3
RO output low voltage VOL 0.4 V IO = 1mA 3
Three-state output current at receiver IOZR -1 1 µA 0 ≤ VO ≤ VCC 3
Receiver input resistance RIN 96 kΩ -7V ≤ VCM ≤ 12V 3
Receiver output short-circuit current IOSR -80 80 mA 0V ≤ VRO ≤ VCC 3
Supply current ICC 0.8 1.5 mA No load, RE = 0, DE = VCC 3
ESD protection, Human Body Model (Y, Z, A, B) -15 15 kV Human Body Model, pins Y, Z, A, B 3
Driver propagation delay (tDPLH) tDPLH 50 ns CL = 50pF, RL = 54Ω, Figures 2 and 3 (16Mbps, SRL = GND) 6
Driver propagation delay (tDPHL) tDPHL 50 ns CL = 50pF, RL = 54Ω, Figures 2 and 3 (16Mbps, SRL = GND) 6
Driver differential output rise or fall time tDR, tDF 15 ns CL = 50pF, RL = 54Ω, Figures 2 and 3 (16Mbps, SRL = GND) 6
Differential driver output skew tDSKEW 8 ns CL = 50pF, RL = 54Ω, Figures 2 and 3 (16Mbps, SRL = GND) 6
Maximum data rate (driver) 16 Mbps 16Mbps, SRL = GND 6
Driver enable to output high tDZH 150 ns Figure 4 (16Mbps, SRL = GND) 6
Driver enable to output low tDZL 150 ns Figure 5 (16Mbps, SRL = GND) 6
Driver disable time from low tDLZ 100 ns Figure 5 (16Mbps, SRL = GND) 6
Driver disable time from high tDHZ 100 ns Figure 4 (16Mbps, SRL = GND) 6
Receiver propagation delay tRPLH, tRPHL 40 75 ns CL = 15pF, Figures 6 and 7 (16Mbps, SRL = GND) 6
Receiver output skew tRSKEW 8 ns CL = 15pF, Figures 6 and 7 (16Mbps, SRL = GND) 6
Maximum data rate (receiver) 16 Mbps 16Mbps, SRL = GND 6
Receiver enable to output low tRZL 50 ns Figure 8 (16Mbps, SRL = GND) 6
Receiver enable to output high tRZH 50 ns Figure 8 (16Mbps, SRL = GND) 6
Receiver disable time from low tRLZ 50 ns Figure 8 (16Mbps, SRL = GND) 6
Receiver disable time from high tRHZ 50 ns Figure 8 (16Mbps, SRL = GND) 6
Supply voltage tolerance VCC -10 10 % VCC = 3.3V ±10%, TA = TMIN to TMAX 2
Supply voltage (absolute maximum) VCC 6 V Referenced to GND 2
Control input voltage (RE, DE, SLR, H/F, TXP, RXP) -0.3 6 V Referenced to GND 2
Driver input voltage (DI) -0.3 6 V Referenced to GND 2
Driver output voltage (Z, Y, A, B) -8 13 V Referenced to GND 2
Receiver input voltage (A, B) -8 13 V Referenced to GND 2
Receiver output voltage (RO) -0.3 V Referenced to GND; upper limit VCC + 0.3V 2
Driver output current -250 250 mA 2
Storage temperature range TSTG -65 150 °C 2
Junction temperature TJ 150 °C 2
Operating temperature range (MAX307_EA_ _) TA -40 125 °C MAX307_EA_ _ variant (EA suffix) 2

CAD (KiCad official)

  • Symbol: MAX3077EASA+
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: max3077easa-etched.step / max3077easa-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max3077easa.step / max3077easa.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices Inc Maxim Integrated datasheet (23 pp, sha256 864232a540aeec53, retrieved 2026-10-21, 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