Datasheet

SN74GTLP1395
TWO 1-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVERS
WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND SELECTABLE POLARITY
SCES349B – JUNE 2001 – REVISED AUGUST 2001
3–39
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
functional description
The output-enable (1OEAB, 1OEBY) and polarity-control (1T/C) inputs control 1A, 1B, and 1Y. 2OEAB, 2OEBY,
and 2T/C
control 2A, 2B, and 2Y.
OEAB
controls the activity of the B port. When OEAB is low, the B-port output is active. When OEAB is high,
the B-port output is disabled.
A separate LVTTL A input and Y output provide a feedback path for control and diagnostics monitoring. OEBY
controls the Y output. When OEBY is low, the Y output is active. When OEBY is high, the Y output is disabled.
T/C selects polarity of data transmission in both directions. When T/C is high, data transmission is true, and
A data goes to the B bus and B data goes to the Y bus. When T/C
is low, data transmission is complementary,
and inverted A data goes to the B bus and inverted B data goes to the Y bus.
Function Tables
OUTPUT CONTROL
INPUTS
T/C OEAB OEBY
OUTPUT MODE
X H H Z Isolation
H L H A data to B bus
H H L B data to Y bus
True transparent
H L L A data to B bus, B data to Y bus
True transparent
with feedback path
L L H Inverted A data to B bus
L H L Inverted B data to Y bus
Inverted transparent
L L L
Inverted A data to B bus,
Inverted B data to Y bus
Inverted transparent
with feedback path
OUTPUT EDGE-RATE CONTROL (ERC)
INPUT
ERC
LOGIC LEVEL
OUTPUT
B-PORT
EDGE RATE
H Slow
L Fast
PRODUCT PREVIEW