 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
DS2480 Datasheet(PDF) 1 Page - Dallas Semiconductor |
|
|
|||||||||||||||||||||||||||||
DS2480 Datasheet(HTML) 1 Page - Dallas Semiconductor |
|
|
1 / 26 page  DS2480 Serial 1–WireTM Line Driver DS2480 042498 1/26 FEATURES • Universal, common–ground serial port to 1–WireTM line driver for MicroLANTM applications • Works with all iButtons and MicroLAN–compatible 1–Wire slave devices • Communicates at regular and Overdrive 1–Wire speed and serial port data rates of 9600 (default), 19200, 57600 and 115200 bps • Supports 12V EPROM programming and stiff 5V pull–up for Crypto iButton, sensors and EEPROM • Self–calibrating time base with ±5% tolerance for serial and 1–Wire communication • Slew rate controlled 1–Wire pull–down and active pull–up to accommodate long lines and reduce radi- ation • User–selectable RXD/TXD polarity minimizes com- ponent count when interfacing to 5V based RS232 systems or directly to UARTs • Programmable 1–Wire timing and driver characteris- tics accommodate a wide range of MicroLAN configu- rations at regular speed • Smartprotocolcombinesdataandcontrolinformation without requiring extra pins • Compatibleto optical, IR and RF to RS232 converters • Low cost 8–pin SOIC surface mount package • Operates over 4.5V to 5.5V from –40°C to +85°C PIN ASSIGNMENT RXD 1–W GND POL TXD VPP 8 7 6 5 8–PIN SOIC (150 MIL) NC VDD 1 2 3 4 PIN DESCRIPTION GND Ground 1–W 1–Wire Input/Output NC No Connection VDD 4.5 to 5.5 Volts VPP Optional EPROM Programming Voltage POL RXD/TXD Polarity Select TXD Serial Data from UART RXD Serial Data to UART ORDERING INFORMATION DS2480S 8–pin SOIC DESCRIPTION The DS2480 is a serial port to 1–Wire interface chip that supports standard and Overdrive speeds. It connects directly to UARTs and 5V RS232 systems. Interfacing to RS232C ( ± 12V levels) requires a passive clamping cir- cuit and one 5V to ± 12V level translator. Internal timers relieve the host of the burden of generating the time– critical 1–Wire communication waveforms. In contrast to the DS9097(E) where a full character must be sent by the host for each 1–Wire time slot, the DS2480 can translate each character into eight 1–Wire time slots thereby increasing the data throughput significantly. In addition, the DS2480 can be set to communicate at four different data rates including 115.2 kbps, 57.6 kbps and 19.2 kbps with 9.6 kbps being the power–on default. Command codes received from the host’s crystal con- trolled UART serve as a reference to continuously cali- brate the on–chip timing generator. The DS2480 uses a unique protocol that merges data and control informa- tion without requiring control pins. This approach main- tains compatibility to off–the–shelf serial to wireless converters allowing easy realization of 1–Wire media jumpers. The various control functions of the DS2480 are optimized for MicroLAN 1–Wire networks and sup- port the special needs of all current 1–Wire devices including the Crypto iButton, EPROM–based Add–Only Memories, EEPROM devices and 1–Wire Thermome- ters. |
Similar Part No. - DS2480 |
|
Similar Description - DS2480 |
|
|
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
