Product Overview
Maxim MAX3221CAE 3.0 V to 5.5 V RS-232 Line Driver and Receiver with AutoShutdown, 16-Pin SSOP
Condition
Unused new old stock (NOS). Markings legible: MAXIM logo, MAX3221 CAE. Sold each.
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Product Overview
Maxim's MAX3221CAE is a single-channel RS-232 transceiver: one line driver and one receiver, with an internal charge pump that builds RS-232 levels from one 3.0 V to 5.5 V supply. AutoShutdown drops supply current to 1 uA. Maxim is now part of Analog Devices.
Key Features
- 1 RS-232 driver and 1 RS-232 receiver
- Single supply: 3.0 V to 5.5 V, internal charge pump
- AutoShutdown, 1 uA supply current in shutdown
- Commercial temperature range: 0 C to +70 C
- 16-pin SSOP surface-mount package
- Leaded (non-RoHS) version
Applications
- Replacing a failed MAX3221CAE on a board with a single serial port
- Bringing a 3.3 V microcontroller's UART out to a DB9 console or debug port
- Battery-powered loggers and handhelds where the serial port sits idle most of the day
Frequently Asked Questions
Will it run from a 3.3 V rail?
Yes. It runs from 3.0 V to 5.5 V, so a 3.3 V or a 5 V rail both work.
Is this the lead-free MAX3221CAE+?
No. This is the leaded MAX3221CAE, with no + in the part number. It is not RoHS compliant.
Can it handle RTS/CTS handshaking?
No. It carries one driver and one receiver, enough for TX and RX, so a port that also runs RTS and CTS needs a second chip.
A bare console port needs transmit, receive and a ground wire and nothing more, the exact job one driver and one receiver were sized for. Count the ports on the board, not the pins on the connector.
