Key facts
- Brand
- Maxim
- Model
- MAX3243E
- Industry
- Industrial
- Documents
- 4
- Languages
- EN
- Last added
- 2012-05-08
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Maxim MAX3221E/MAX3223E/MAX3243E RS-232 Transceiver User Manual
The MAX3221E, MAX3223E, and MAX3243E are 3‑V‑powered RS‑232 transceivers with automatic shutdown/wakeup, high‑data‑rate capability, and +15 kV ESD protection. They are intended for notebook, handheld, and peripheral applications such as printers and cellular phones.
Key features include Maxim’s AutoShutdown technology that reduces supply current to about 1 µA when no valid RS‑232 signals are present, dual charge‑pump voltage conversion for true RS‑232 levels, and a variety of package options (TQFN, SSOP, TSSOP). The manual provides pin descriptions, electrical and timing specifications, and wiring diagrams for proper integration.
Maxim MAX3243E specifications
| Supply voltage range | +3.0V to +5.5V |
|---|---|
| Maximum data rate | 250kbps |
| Supply current with AutoShutdown | 1µA |
| ESD protection, Human Body Model | ±15kV |
| ESD protection, IEC 1000-4-2 Contact Discharge | ±8kV |
| MAX3221E drivers/receivers | 1/1 |
| MAX3223E drivers/receivers | 2/2 |
| MAX3243E drivers/receivers | 3/5 |
| Charge-pump capacitors | C1–C4 = 0.1µF |
Source: Maxim MAX3221E/MAX3223E/MAX3243E RS-232 Transceivers with AutoShutdown Datasheet
All Maxim MAX3243E documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the supply current when the device is in shutdown mode?
The device draws only 1 µA in shutdown mode thanks to the AutoShutdown feature.
From: Maxim MAX3221E/MAX3223E/MAX3243E RS-232 Transceiver Datasheet
What is the maximum data rate supported by the transceivers?
They support a maximum data rate of 250 kbps.
From: Maxim MAX3221E/MAX3223E/MAX3243E RS-232 Transceiver Datasheet
What supply voltage range do the MAX3221E/MAX3223E/MAX3243E support?
They operate from a +3.0V to +5.5V supply.
From: Maxim MAX3221E/MAX3223E/MAX3243E RS-232 Transceivers with AutoShutdown Datasheet
What data rate are these devices guaranteed to support?
They are guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels.
From: Maxim MAX3221E/MAX3223E/MAX3243E RS-232 Transceivers with AutoShutdown Datasheet
What voltage range do the transceivers operate over?
They operate from 3.0 V up to 5.5 V supply voltage.
From: Maxim MAX3221E/MAX3223E/MAX3243E RS-232 Transceiver User Manual
What is the maximum data rate supported?
The devices support a maximum data rate of 250 kbps.
From: Maxim MAX3221E/MAX3223E/MAX3243E RS-232 Transceiver User Manual