| YTD423 |  | Yamaha | 0.3-7.0V IHDLC2: ISDN BRI controller with B-ch HDLC controller | Original | PDF | 210.93KB | 11 | 
| YTD423 |  | Yamaha | ISDN BRI controller with B-ch HDLC controller | Original | PDF | 272.67KB | 11 | 
| YTD423D-S |  | Yamaha | IHDLC2 - ISDN BRI controller with B-ch HDLC controllers | Original | PDF | 272.67KB | 11 | 
| YTD423D-S |  | Yamaha | ISDN BRI User Interface LSI with built-in 2-channel HDLC and DMA Controllers necessary for B channel Data Transmission | Original | PDF | 210.93KB | 11 | 
| YTD423-S |  | Yamaha | ISDN ST U interface, 192Kbps S/T transceiver with HDLC controller | Original | PDF | 294.16KB | 32 | 
| YTD423-S |  | Yamaha | IHDLC2 - ISDN BRI controller with B-ch HDLC controllers | Original | PDF | 272.67KB | 11 |