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MAX3485 Datasheet – 3.3V, Low-Power Transceiver – Maxim

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Part Number: MAX3485, MAX3485CPA, MAX3485CSA

Function : 3.3V, low-power transceivers for RS-485 and RS-422 communication

Package: DIP 8 Pin or SO 8 Pin Type

Manufacturer: Maxim

Image

max3485-transceiver

Description

The MAX3483, MAX3485, MAX3486, MAX3488, MAX3490, and MAX3491 are 3.3V, low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The MAX3483 and MAX3488 feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The partially slew-rate-limited MAX3486 transmits up to 2.5Mbps. The MAX3485, MAX3490, and MAX3491 transmit at up to 10Mbps.

Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if both inputs are open circuit.

Pinout

max3485-datasheet-pinout

Features

1. Operate from a Single 3.3V Supply-No Charge Pump!

2. Interoperable with +5V Logic

3. 8ns Max Skew (MAX3485/MAX3490/MAX3491)

4. Slew-Rate Limited for Errorless Data Transmission (MAX3483/MAX3488)

5. 2nA Low-Current Shutdown Mode (MAX3483/MAX3485/MAX3486/MAX3491)

6. -7V to +12V Common-Mode Input Voltage Range

7. Allows up to 32 Transceivers on the Bus

8. Full-Duplex and Half-Duplex Versions Available

MAX3485 Datasheet


 

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DS1307 Datasheet – 64 x 8, Serial, Real-Time Clock – Maxim

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Part Number: DS1307

Function: 64 x 8, Serial, I2C Real-Time Clock

Package: 8-Pin DIP, 8-Pin SO Type

Manufacturer: Maxim Integrated

Image

ds1307-real-time-clock
GENERAL Description

The DS1307 serial real-time clock (RTC) is a low power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C, bidirectional bus.

The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The DS1307 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply.

Timekeeping operation continues while the part operates from the backup supply.

 

Pinouts:

DS1307 datasheet

 

Features

1. Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the week, and Year with Leap-Year Compensation Valid Up to 2100
2. 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes
3. I2C Serial Interface
4. Programmable Square-Wave Output Signal 
5. Automatic Power-Fail Detect and Switch Circuitry
6. Consumes Less than 500nA in Battery-Backup Mode with Oscillator Running
7. Optional Industrial Temperature Range: -40°C to +85°C
8. Available in 8-Pin Plastic DIP or SO
9. Underwriters Laboratories (UL) Recognized

 

Official HomePage : https://www.maximintegrated.com/en/products/digital/real-time-clocks/DS1307.html

 

DS1307 Datasheet

DS1307 pdf

Other data sheets are available within the file: DS1307+, DS1307N+, DS1307Z+, DS1307Z+T&R

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