Datasheet

SN74GTLP1394
2-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER
WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND SELECTABLE POLARITY
SCES286E – OCTOBER 1999 – REVISED AUGUST 2001
3–33
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
SN74GTLP1394 interface with the TSB14AA1 1394 backplane PHY
D A1, B1, and Y1 are used for the PHY data signals.
D A2, B2, and Y2 are used for the PHY strobe signals.
D PHY N_OEB_D or OCDOE connects to OEAB, which controls the PHY transmit signals.
D OEBY is connected to GND since the transceiver always must be able to receive signals from the backplane
and relay them to the PHY.
D T/C is connected to GND for inverted signals.
D V
CC
is nominal 3.3 V.
D BIAS V
CC
is connected to nominal 3.3 V to support live insertion.
D V
REF
normally is 2/3 of V
TT
.
D ERC normally is connected to GND for slow edge-rate operation because frequencies of only 50 MHz
(S100) and 25 MHz (S50) are required.