MAX232CPE Datasheet – RS-232 Drivers / Receivers – Maxim

This IC is dual driver/receiver.

Part Number : MAX232CPE

Function : +5V-Powered, Multichannel RS-232 Drivers/Receiver

Package : 16 Pin DIP Type

Manufacturers : Maxim Integrated

Image

max232cpe-rs-232-driver-receiver-maxim

 

Description :

The MAX220 Thru MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available.

These parts are especially useful in battery-powered systems, since their low-power shutdown mode reduces power dissipation to less than 5µW. The MAX225, MAX233, MAX235, and MAX245/MAX246/MAX247 use no external components and are recommended for applications where printed circuit board space is critical.

The MAX220-MAX249 are offered in 26 different packages with temperatures from 0 to +70°C up to -55°C to +125°C. See ordering information table at the end of the data sheet for all package and temperature options.
max232 Datasheet Selection Table

Applications/Uses

1. Battery-Powered RS-232 Systems
2. Interface Translation
3. Low-Power Modems
4. Multidrop RS-232 Networks
6. Portable Computing

MAX232CPE Drivers

The typical driver output voltage swing is ±8V when loaded with a nominal 5kΩRS-232 receiver and VCC= +5V. Output swing is guaranteed to meet the EIA/TIA-232E and V.28 specification, which calls for ±5V minimum driver output levels under worst-case conditions. These include a minimum 3kΩload, VCC= +4.5V, and maximum operating temperature. Unloaded driver output voltage ranges from (V+ -1.3V) to (V- +0.5V).

 

Pinout

max232cpe-datasheet-pinout

 

MAX232CPE Receivers

EIA/TIA-232E and V.28 specifications define a voltage level greater than 3V as a logic 0, so all receivers invert. Input thresholds are set at 0.8V and 2.4V, so receivers respond to TTL level inputs as well as EIA/TIA-232E and V.28 levels. The receiver inputs withstand an input overvoltage up to ±25V and provide input terminating resistors with nominal 5kΩ values. The receivers implement Type 1 interpretation of the fault conditions of V.28 and EIA/TIA-232E.

Reference Site : [ Wikipedia MAX232 Info ]

MAX232CPE Datasheet PDF

MAX232 pdf

 

Other data sheets within the file : MAX220 Thru MAX249, MAX222C-D, MAX223C-D

LM75 Datasheet – Digital Temperature Sensor – Maxim

Part Number : LM75

Function : Digital Temperature Sensor and Thermal WATCHDOG with Two-Wire Interface

Manufacturers : Maxim Integrated

Pinouts :

LM75 datasheet

General Description
The LM75 temperature sensor includes a delta-sigma analog-to-digital converter, and a digital overtempera ture detector. The host can query the LM75 through its I2C interface to read temperature at any time. The open-drain overtemperature output (OS) sinks current when the programmable temperature limit is exceeded. The OS output operates in either of two modes, com parator or interrupt. The host controls the temperature at which the alarm is asserted (TOS) and the hysteresis temperature below which the alarm condition is not valid (THYST). Also, the LM75’s TOSand THYSTregis ters can be read by the host. The address of the LM75 is set with three pins to allow multiple devices to work
on the same bus. Power-up is in comparator mode, with defaults of TOS= +80°C and THYST= +75°C. The 3.0V to 5.5V supply voltage range, low supply current, and I2C interface make the LM75 ideal for many applications in thermal management and protection.

Features
1. SO (SOP) and µMAX®(µSOP) Packages
2. I2C Bus Interface
3. Separate Open-Drain OS Output Operates as Interrupt or Comparator/Thermostat Input
4. Register Readback Capability
5. Power-Up Defaults Permit Stand-Alone Operation as a Thermostat
6. 3.0V to 5.5V Supply Voltage
7. Low Operating Supply Current 250µA (typ), 1mA(max)
8. 4µA (typ) Shutdown Mode Minimizes Power Consumption
9. Up to Eight LM75s Can Be Connected to a Single Bus
10. Pin- and/or Register-Compatible with Improved Performance Maxim Sensors Including MAX7500, MAX6625, MAX6626, DS75LV, and DS7505

 

LM75 Datasheet PDF Download
LM75 pdf

Other data sheets within the file : LM75BIM-3+, LM75BIM-5+, LM75BIMM-3+, LM75BIMM-5+