SP3485E
Every spec below is cited to the manufacturer datasheet. Pick your exact ordering code, compare the closest alternatives, then ask the assistant what it means for your design.
What the SP3485E family does
The SP3485E is a 3.3V half-duplex RS-485 transceiver available in DIP-8, SOP-8, MSOP-8, DFN-83*3, and SOT-23-8 packages. It supports a 12Mbps data rate with a 3.0V to 3.6V operating range and drives up to 256 units on a single bus. The device features integrated transient voltage suppression, thermal shutdown, and fail-safe protection. Engineers typically use it for robust industrial communication in noisy environments where high-speed, reliable data transmission is required.
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Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
SP3485E datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 520 µA | 800 µA | 7. Supply Current | UTD Semiconductor Co.,Limited datasheet, p. 5 — 7. Supply Current |
| output voltage | — | 3.3 V | — | (no load); 5. Driver Electrical Characteristics | UTD Semiconductor Co.,Limited datasheet, p. 4 — 5. Driver Electrical Characteristics |
| output current | 8 mA | — | 60 mA | 0V<VO<VCC; receiver; 6. Receiver Electrical Characteristics | UTD Semiconductor Co.,Limited datasheet, p. 5 — 6. Receiver Electrical Characteristics |
| supply voltage range | — | 3.3 V | — | HGSEMI datasheet, p. 11 | |
| operating temperature | 0 °C | — | 70 °C | HGSEMI datasheet, p. 3 — 极限参数 | |
| propagation delay | — | 8 ns | 35 ns | (see Fig 3 and Fig 4); 8. Driver Switching Characteristics | UTD Semiconductor Co.,Limited datasheet, p. 6 — 8. Driver Switching Characteristics |
| data rate | — | 12 Mbps | — | HGSEMI datasheet, p. 11 | |
| output voltage low | — | — | 400 mV | IOUT = 2.5mA, VID = -200mV; 6. Receiver Electrical Characteristics | UTD Semiconductor Co.,Limited datasheet, p. 5 — 6. Receiver Electrical Characteristics |
| channel count | — | 1 | — | HGSEMI datasheet, p. 11 | |
| driver count | — | 1 | — | HGSEMI datasheet, p. 11 | |
| receiver count | — | 1 | — | HGSEMI datasheet, p. 11 |
Closest matches to SP3485E
GM3485E
2.5× higher propagation delay, 1.6× lower operating temperature, 1.5× lower output voltage
MAX3485ESA
1.1× lower operating temperature, similar output current, similar output voltage
GM3085E
15.9× higher propagation delay, 12.0× lower data rate, 3.7× lower quiescent current
GM3232E
1.8× higher output current, 1.7× lower quiescent current, 1.6× lower operating temperature
MAX3232
1.7× lower quiescent current, 1.3× higher supply voltage range, similar output current
PCA9509
13.6× higher propagation delay, 2.0× lower output voltage low, 1.7× lower output current
SP3222ECA-L
1.8× higher output voltage, 1.7× lower quiescent current, 1.3× higher supply voltage range
SP490E
1.7× higher quiescent current, 1.6× higher propagation delay, 1.6× lower operating temperature
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