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Description: The MAX3316EMAX3319E are 2.5V powered RS-232 compatible transceivers. These devices feature shut-down ...


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MAX3316EMAX3319E General Description


The MAX3316EMAX3319E are 2.5V powered RS-232 compatible transceivers. These devices feature shut-down (MAX3317E), AutoShutdown Plus (MAX3318E/
MAX3319E), and enhanced electrostatic discharge (ESD) protection integrated into the chip. All transmitter outputs and receiver inputs are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge method, ±8kV using the IEC 1000-4-2 Contact Discharge method, and ±15kV using the Human Body Model.

All devices are guaranteed at a data rate of 460kbps. The transceivers have a proprietary low-dropout transmitter output stage enabling RS-232 compatible operation from a +2.25V to +3.0V supply with a dual charge pump. The charge pump requires only four 0.1µF capacitors. The MAX3318E/MAX3319E feature a logic level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

The MAX3318E/MAX3319E achieve a 1µA supply current using Maxim's revolutionary AutoShutdown Plus feature. These devices automatically enter a low power shut-down mode when the RS-232 cable is disconnected or the transmitters of the connected peripherals are inactive for more than 30 seconds. They turn on again when they sense a valid transition at any transmitter or receiver input. AutoShutdown Plus saves power without changes to the existing BIOS or operating system. The MAX3317E also features a 1µA shutdown mode that can be entered by driving SHDN low. The MAX3317E's receivers remain active while in shutdown mode, allowing external devices such as modems to be monitored using only 1µA supply current.  These devices are available in space-saving packages: MAX3316E (16-pin SSOP and 20-pin TSSOP), MAX3317E/MAX3318E (20-pin SSOP and 20-pin TSSOP), and MAX3319E (16-pin SSOP).

MAX3316EMAX3319E Maximum Ratings

VCC to GND.................................................................-0.3V to +6V
V+ to GND (Note 1).....................................................-0.3V to +7V
V- to GND (Note 1)......................................................-7V to +0.3V
V+ + |V-| (Note 1)...................................................................+13V
Input Voltages
T_IN, EN, SHDN, FORCEON,
FORCEOFF  to GND.......................................................-0.3V to +6V
R_IN to GND............................................................................±25V
Output Voltages
T_OUT to GND......................................................................±13.2V
R_OUT,
INVALID , READY to GND.......-0.3V to (VCC+ 0.3V)
Short-Circuit Duration, T_OUT to GND...........................Continuous
Continuous Power Dissipation (TA= +70°C)
16-Pin SSOP (derate 7.14mW/°C above +70°C)................571mW
20-Pin SSOP (derate 8.00mW/°C above +70°C)................640mW
20-Pin TSSOP (derate 7.00mW/°C above +70°C)..............559mW
Operating Temperature Range
MAX331_EC_ _.........................................................0°C to +70°C
MAX331_EE_ _......................................................-40°C to +85°C
Storage Temperature Range...............................-65°C to +150°C
Lead Temperature (soldering, 10s)....................................+300°C


Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:
V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.

MAX3316EMAX3319E Features

ESD Protection for RS-232 I/O Pin
    ±15kV-Human Body Model
    ±8kV-IEC 1000-4-2, Contact Discharge
    ±15kV-IEC 1000-4-2, Air-Gap Discharge
300µA Operating Supply Current
1µA Low-Power Shutdown with Receivers Active
Guaranteed 460kbps Data Rate
Guaranteed 4V/µs Slew Rate
RS-232 Compatible Down to 2.25V

MAX3316EMAX3319E Typical Application

Palmtop Computers
Hand-Held Instruments
Pagers
Cellular Phones
GPS
Handy Terminals
Hand-Held Electronic Books

MAX3316EMAX3319E Connection Diagram

MAX3316EMAX3319E  Connection Diagram

MAX3316EMAX3319E datasheet

MAX002
PDF/DataSheet Download

  • Datasheet: MAX002
  • File Size: 42133 KB
  • Manufacturer: FILTRONIC [Filtronic Compound Semiconductors]
  • Click here to Download

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