name:         78P2241
function:     DS3/E3/STS1 Transceiver
package:      PLCC,28
manufacturer: TDK
added-by:     Neil Harrison
comment:      DS3/E3/STS1 Transceiver with B3ZS/HDB3 ENDEC

+---------+---------------+------------+---------------+
| 1 - LIN+|  8 - GND      | 15 - TNEG  | 22 - GND      |
| 2 - GND |  9 - LOUT+    | 16 - TCLK  | 23 - RCLK     |
| 3 - LIN-| 10 - ICKP     | 17 - VCC   | 24 - RNEG     |
| 4 - GND | 11 - LOUT-    | 18 - TXEN  | 25 - RPOS/RNRZ|
| 5 - RFO | 12 - n/c      | 19 - LF1   | 26 - VCC      |
| 6 - GND | 13 - /E3      | 20 - /ENDEC| 27 - /LOS     |
| 7 - VCC | 14 - TPOS/TNRZ| 21 - MON   | 28 - /LPBK    |
+---------+---------------+------------+---------------+

This information was added by a third party and may be incorrect.

This pinout came from the Chipdir:
http://www.chipdir.org/