Overview
The ADM3222ARSZ-REEL7 is a low-power, 3.3V RS-232 line driver/receiver produced by Analog Devices Inc. This high-speed, 2-channel RS-232/V.28 interface device operates from a single 3.3V power supply, making it ideal for battery-powered portable instruments. It conforms to the EIA-232E and CCITT V.28 specifications and supports data rates up to 460Kbps. The device includes additional enable and shutdown circuitry, allowing for power-down modes that reduce quiescent current to less than 0.5μA.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADM3222ARSZ-REEL7 |
| Package | SSOP-20-208mil |
| Supply Voltage Range | 3V to 5.5V |
| Data Rate | Up to 460Kbps |
| Number of Drivers/Receivers | 2/2 |
| Operating Temperature Range | -40°C to +85°C |
| Propagation Delay Time | 0.3μs (Transmitter), 0.4μs (Receiver) |
| ESD Protection | Without ESD Protection |
| Shutdown Current | < 0.5μA |
| Charge Pump Capacitors | Four external 0.1μF capacitors |
Key Features
- Low power consumption with a typical VCC power supply current of 1.3mA at no load.
- High-speed operation supporting data rates up to 460Kbps.
- Single 3.3V power supply with voltage doubler/inverter using four external 0.1μF charge pump capacitors.
- Active-low EN input for three-state receiver outputs and active-low SD input for shutdown, reducing quiescent current to less than 0.5μA.
- Full duplex operation with 2 drivers and 2 receivers.
- Transition region slew rate of 10V/μs typical.
- Receiver propagation delay of 0.4μs (TPHL, TPLH) typical.
- 20-lead shrink small outline package (SSOP).
Applications
- General-purpose RS-232 data links.
- Portable instruments.
- Printers.
- Palmtop computers and PDAs.
- Battery-powered devices due to low power consumption and shutdown facility.
Q & A
- What is the operating voltage range of the ADM3222ARSZ-REEL7?
The operating voltage range is from 3V to 5.5V.
- What is the maximum data rate supported by the ADM3222ARSZ-REEL7?
The maximum data rate supported is up to 460Kbps.
- How many drivers and receivers does the ADM3222ARSZ-REEL7 have?
The device has 2 drivers and 2 receivers.
- What is the package type of the ADM3222ARSZ-REEL7?
The package type is SSOP-20-208mil.
- What is the operating temperature range of the ADM3222ARSZ-REEL7?
The operating temperature range is from -40°C to +85°C.
- Does the ADM3222ARSZ-REEL7 have ESD protection?
No, the ADM3222ARSZ-REEL7 does not have ESD protection.
- How does the shutdown feature work on the ADM3222ARSZ-REEL7?
The active-low SD input is used to power down the charge pump and transmitter outputs, reducing the quiescent current to less than 0.5μA. The receivers remain enabled during shutdown unless disabled using the active-low EN input.
- What type of capacitors are required for the voltage doubler/inverter in the ADM3222ARSZ-REEL7?
Four external 0.1μF charge pump capacitors are required.
- Is the ADM3222ARSZ-REEL7 compliant with any specific standards?
Yes, it conforms to the EIA-232E and CCITT V.28 specifications.
- What is the typical VCC power supply current at no load for the ADM3222ARSZ-REEL7?
The typical VCC power supply current at no load is 1.3mA.
