Datasheet

SN74GTLPH1627
18-BIT LVTTL-TO-GTLP BUS TRANSCEIVER
WITH SOURCE SYNCHRONOUS CLOCK OUTPUTS
SCES356B – JUNE 2001 – REVISED SEPTEMBER 2001
3–106
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 (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
EDGE RATE
†
FSTA MIN TYP
‡
MAX UNIT
f
max
MHz
t
PLH
t
PHL
A B Slow – ns
t
PLH
t
PHL
A B Fast – ns
t
PLH
t
PHL
CKOE
B Slow – ns
t
PLH
t
PHL
CKOE
B Fast – ns
t
PLH
t
PHL
SYSCLK B Slow – ns
t
PLH
t
PHL
SYSCLK B Fast – ns
t
en
t
dis
OE
B Slow – ns
t
en
t
dis
OE
B Fast – ns
Rise time, B and SSCLK outputs
Slow
t
r
(20% to 80%)
Fast
– ns
Fall time, B and SSCLK outputs
Slow
t
f
(80% to 20%)
Fast
– ns
t
PLH
t
PHL
B A – – ns
t
PLH
t
PHL
CKOE
A – – ns
t
PLH
SYSCLK or
t
PHL
SSCLK
A – – ns
t
PLH
SYSCLK or
t
PHL
SSCLK
CLKOUT – GND ns
t
PLH
SYSCLK or
t
PHL
SSCLK
CLKOUT – V
CC
ns
t
en
t
dis
OE
A – – ns
t
en
t
dis
CKOE
CLKOUT – – ns
†
Slow (ERC = H) and Fast (ERC = L)
‡
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
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