Datasheet
SN74GTLPH1612
18-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE
UNIVERSAL BUS TRANSCEIVER
SCES287D – OCTOBER 1999 – REVISED AUGUST 2001
3–78
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature, V
TT
= 1.5 V and V
REF
= 1 V for GTLP (normal mode) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
EDGE RATE
†
MIN TYP
‡
MAX UNIT
f
max
175 MHz
t
PLH
4.2 5.6 7.1
t
PHL
A B Slow
3 4.4 6.3
ns
t
PLH
3 4.3 5.7
t
PHL
A B Fast
2.6 3.8 5.3
ns
t
PLH
4.6 6.1 7.7
t
PHL
LEAB B Slow
3.3 4.7 6.5
ns
t
PLH
3.4 4.8 6.2
t
PHL
LEAB B Fast
3 4.2 5.7
ns
t
PLH
4.7 6.2 7.7
t
PHL
CLKAB B Slow
3.2 4.7 6.4
ns
t
PLH
3.5 4.9 6.2
t
PHL
CLKAB B Fast
2.9 4.2 5.6
ns
t
en
3 4.6 6.5
t
dis
OEAB
B Slow
4.6 6 7.5
ns
t
en
2.7 4.1 5.6
t
dis
OEAB
B Fast
3.4 4.8 6.2
ns
Slow 2.5
t
r
Rise time, B outputs (20% to 80%)
Fast 1.3
ns
Slow 3.3
t
f
Fall time, B outputs (80% to 20%)
Fast 2.5
ns
t
PLH
1.3 2.9 4.6
t
PHL
B A
1.6 3 4.2
ns
t
PLH
1.5 3.2 4.6
t
PHL
LEBA A
1.5 3 3.9
ns
t
PLH
1.5 3.3 4.8
t
PHL
CLKBA A
1.5 3 4.2
ns
t
en
1.2 2.5 5
t
dis
OEBA
A
2.3 3.8 5.5
ns
†
Slow (ERC
= GND) and Fast (ERC = V
CC
)
‡
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.