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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.
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
markdownMAX3077EASA+
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3077easa.step/max3077easa.glbare 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, 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).