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GTLP2T152
DC Electrical Characteristics (Continued)
Note 3: All typical values are at V
CC
= 3.3V and T
A
= 25°C.
Note 4: For conditions shown as Min, use the appropriate value specified under recommended operating conditions.
Note 5: This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND.
Note: GTLP V
REF
and V
TT
are specified to 2% tolerance since signal integrity and noise margin can be significantly degraded if these supplies are noisy. In
addition, V
TT
and R
TERM
can be adjusted beyond the recommended operating to accommodate backplane impedances other than 50Ω, but must remain
within the boundaries of the DC Absolute Maximum Ratings. Similarly, V
REF
can be adjusted to optimize noise margin.
AC Electrical Characteristics
Over recommended range of supply voltage and operating free-air temperature, V
REF
= 1.0V (unless otherwise noted).
C
L
= 30 pF for B Port and C
L
= 50 pF for A Port.
Note 6: All typical values are at V
CC
= 3.3V, and T
A
= 25°C.
Symbol Test Conditions
Min Typ Max
Units
(Note 3)
I
OZL
A Port V
CC
= 3.45V V
O
= 0V −10
µA
B Port V
O
= 0V −5
I
PU/PD
All Ports V
CC
= 0 to 1.5V V
I
= 0 to 3.45V 30 µA
I
CC
A Port V
CC
= 3.45V Outputs HIGH 11
mAor B Port I
O
= 0 Outputs LOW 11
V
I
= V
CC
/V
TT
or GND Outputs Disabled 11
∆I
CC
A Port and V
CC
= 3.45V, One Input at V
CC
2mA
(Note 5) Control Pins A or Control Inputs at V
CC
or GND −0.6V
C
i
Control Pins V
I
= V
CC
or 0 3 pF
C
I/O
A Port V
I
= V
CC
or 0 5 pF
B Port V
I
= V
TT
or 0 5.5 pF
Symbol
From To Min Typ Max
Unit
(Input) (Output) (Note 6)
t
PLH
AB
1.2 2.9 7.3
ns
t
PHL
0.8 2.0 4.5
t
PLH
BA
1.4 2.5 4.4
ns
t
PHL
1.6 2.7 5.0
t
RISE
Transition Time, B Outputs (20% to 80%) 1.5 ns
t
FALL
Transition Time, B Outputs (80% to 20%) 1.8 ns
t
RISE
Transition Time, A Outputs (10% to 90%) 2.5 ns
t
FALL
Transition Time, A Outputs (90% to 10%) 2.2 ns
