Overview
The ADM1385ARS from Analog Devices Inc. is a high-speed, dual-channel RS-232/V.28 interface transceiver designed for reliable data transmission in various applications. This component operates from a single 3.3 V power supply, making it ideal for battery-powered portable instruments due to its low power consumption and shutdown facility. The ADM1385ARS utilizes CMOS technology to minimize power dissipation, ensuring maximum battery life in portable devices.
Key Specifications
| Type | Transceiver | Protocol | Number of Drivers/Receivers | Voltage - Supply | Mounting Type | Package/Case |
|---|---|---|---|---|---|---|
| Transceiver | RS232 | RS232 | 2/2 | 3V ~ 3.6V | Surface Mount | SSOP-20 |
| Operating Temperature Range | −40°C to +85°C | |||||
| Data Rate | Up to 460 kbps | |||||
| Charge Pump Capacitors | 0.1 μF (can be up to 47 μF) | |||||
| ESD Protection | ±8 kV: contact discharge, ±15 kV: air gap discharge (ADM3202 only) | |||||
Key Features
- High-speed data transmission up to 460 kbps
- Operates from a single 3.3 V power supply
- Low power consumption with shutdown facility
- CMOS technology for minimal power dissipation
- Meets EIA-232E and CCITT V.28 specifications
- ESD protection to IEC 1000-4-2 (801.2) on RS-232 pins (ADM3202 only)
- Internal charge pump voltage converter for voltage doubling and inverting
- Available in various packages including PDIP, SOIC_N, SOIC_W, SSOP, and TSSOP
Applications
- General-purpose RS-232 data links
- Portable instruments
- Printers
- Palmtop computers and PDAs
- Battery-powered devices where low power consumption is critical
Q & A
- What is the operating voltage range of the ADM1385ARS?
The ADM1385ARS operates from a single 3.3 V power supply, with a voltage range of 3V to 3.6V.
- What is the data rate capability of the ADM1385ARS?
The ADM1385ARS can operate at data rates up to 460 kbps.
- What type of package is the ADM1385ARS available in?
The ADM1385ARS is available in a 20-lead Shrink Small Outline Package (SSOP).
- Does the ADM1385ARS have ESD protection?
Yes, the ADM1385ARS (specifically the ADM3202 variant) has ESD protection to IEC 1000-4-2 (801.2) on RS-232 pins, with ±8 kV contact discharge and ±15 kV air gap discharge.
- What are the typical applications of the ADM1385ARS?
The ADM1385ARS is typically used in general-purpose RS-232 data links, portable instruments, printers, palmtop computers, and PDAs.
- How does the ADM1385ARS manage voltage levels for RS-232 signals?
The ADM1385ARS uses an internal charge pump voltage converter to generate the necessary voltage levels for RS-232 signals from a single 3.3 V supply.
- What is the operating temperature range of the ADM1385ARS?
The ADM1385ARS operates over a temperature range of −40°C to +85°C.
- Does the ADM1385ARS have a shutdown facility?
Yes, the ADM1385ARS has a low power shutdown facility, making it suitable for battery-powered devices.
- What type of logic levels does the ADM1385ARS support?
The ADM1385ARS supports TTL/CMOS logic input levels and converts them to RS-232 output levels.
- What are the recommended charge pump capacitors for the ADM1385ARS?
The recommended charge pump capacitors are 0.1 μF, although capacitors up to 47 μF can be used.
