Key facts
- Brand
- Maxim
- Model
- MAX221
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-08
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Maxim MAX221 RS-232 Communication Interface Chip Datasheet
The MAX221 is a +5 V‑powered, single‑channel RS‑232 and V.28 communications interface that incorporates Maxim’s AutoShutdown feature. In normal operation it provides a guaranteed 250 kbps data rate while consuming only 1 µA when the receiver input is idle.
The device is supplied in a 16‑pin TSSOP or SSOP package and operates from –40 °C to +85 °C (MAX221E). It is intended for maintenance/diagnostic ports, industrial systems, telecommunications equipment, and set‑top boxes, and includes pins for forced on/off control and an INVALID output for software‑controlled shutdown.
Maxim MAX221 specifications
| Supply Voltage (VCC) | 4.5 V to 5.5 V |
|---|---|
| Supply Current (AutoShutdown) | 1 µA |
| Maximum Data Rate | 250 kbps |
| Package | 16‑pin TSSOP / SSOP |
| Operating Temperature Range | -40 °C to +85 °C |
| AutoShutdown Feature | Enables 1 µA standby current |
Source: Maxim MAX221 RS-232 Communication Interface Chip Datasheet
All Maxim MAX221 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the supply current when AutoShutdown is active?
The MAX221 draws only 1 µA in AutoShutdown mode.
From: Maxim MAX221 RS-232 Communication Interface Chip Datasheet
How does AutoShutdown decide to shut down the device?
It shuts down when no valid signal is detected on the receiver input for at least 30 µs.
From: Maxim MAX221 RS-232 Communication Interface Chip Datasheet
What is the supply current of the MAX221E in AutoShutdown mode?
The device draws only 1 µA supply current when AutoShutdown is active.
From: Maxim MAX221E Datasheet
How much ESD protection does the MAX221E provide?
It provides ±15 kV protection under the Human Body Model, ±8 kV under IEC 1000‑4‑2 Contact Discharge, and ±15 kV under IEC 1000‑4‑2 Air‑Gap methods.
From: Maxim MAX221E Datasheet