Electronic Components Datasheet Search |
|
SN55976A1WD Datasheet(PDF) 3 Page - Texas Instruments |
|
|
SN55976A1WD Datasheet(HTML) 3 Page - Texas Instruments |
3 / 35 page SN75976A, SN55976A 9-CHANNEL DIFFERENTIAL TRANSCEIVER SLLS218B – MAY 1995 – REVISED MAY 1997 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions TERMINAL Logic I/O Termination DESCRIPTION NAME NO. g Level I/O Termination DESCRIPTION 1A to 9A 4,6,8,10, 19,21,23, 25,27 TTL I/O Pullup 1A to 9A carry data to and from the communication controller. 1B – to 9B – 29,31,33, 35,37,.46, 48,50,52 RS-485 I/O Pulldown 1B – to 9B – are the inverted data signals of the balanced pair to/from the bus. 1B+ to 9B+ 30,32,34, 36,38,47, 49,51,53 RS-485 I/O Pullup 1B+ to 9B+ are the noninverted data signals of the balanced pair to/from the bus. BSR 2 TTL Input Pullup BSR is the bit significant response. BSR disables receivers 1 through 8 and enables wired-OR drivers when BSR and DE/RE and CDE1 or CDE2 are high. Channel 9 is placed in a high-impedance state with BSR high. CDE0 54 TTL Input Pulldown CDE0 is the common driver enable 0. Its input signal enables all drivers when CDE0 and 1DE/RE – 9DE/RE are high. CDE1 55 TTL Input Pulldown CDE1 is the common driver enable 1. Its input signal enables drivers 1 to 4 when CDE1 is high and BSR is low. CDE2 56 TTL Input Pulldown CDE2 is the common driver enable 2. When CDE2 is high and BSR is low, drivers 5 to 8 are enabled. CRE 3 TTL Input Pullup CRE is the common receiver enable. When high, CRE disables receiver channels 5 to 9. 1DE/RE to 9DE/RE 5,7,9,11, 20,22,24, 26,28 TTL Input Pullup 1DE/RE–9DE/RE are direction controls that transmit data to the bus when it and CDE0 are high. Data is received from the bus when 1DE/RE–9DE/RE and CRE and BSR are low and CDE1 and CDE2 are low. GND 1,13,14, 15,16,17, 40,41,42, 43,44 NA Power NA GND is the circuit ground. All GND terminals except terminal 1 are physically tied to the die pad for improved thermal conductivity.† VCC 12,18,39, 45 NA Power NA Supply voltage † Terminal 1 must be connected to signal ground for proper operation. |
Similar Part No. - SN55976A1WD |
|
Similar Description - SN55976A1WD |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | 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 |