GTLP1B151 Datasheet, PDF (4/7 Pages) Fairchild Semiconductor – 1-Bit LVTTL/GTLP Transceiver with Separate LVTTL Port and Feedback Path

DC Electrical Characteristics (Continued)
Symbol
Test Conditions
Min
Typ
Max
(Note 3)
Units
I_PU/PD
I_CC
∆I_CC
(Note 5)
C_i
All Ports
A or B Ports
or C Port
A Port and
Control Pins
Control Pins
and A Port
V_CC = 0 to 1.5V
V_I = 0 to 3.45V
V_CC = 3.45V
Outputs HIGH
I_O = 0
Outputs LOW
V_I = V_CC/V_TT or GND
Outputs Disabled
V_CC = 3.45V,
One Input at V_CC
A or Control Inputs at V_CC or GND −0.6V
V_I = V_CC or 0
30
µA
11
11
mA
11
2
mA
3
pF
C_O
C Port
C_I/O
B Port
Note 3: All typical values are at V_CC = 3.3V and T_A = 25°C.
V_I = V_CC or 0
V_I = V_TT or 0
5
pF
5.5
pF
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 C Port.
Symbol
From
(Input)
To
(Output)
Min
Typ
(Note 6)
Max
Unit
t_PLH
t_PHL
t_PLH
t_PHL
t_PLH
t_PHL
t_RISE
t_FALL
t_RISE
t_FALL
A
B
B
C
A
C
Transition Time, B Outputs (20% to 80%)
Transition Time, B Outputs (80% to 20%)
Transition Time, C Outputs (10% to 90%)
Transition Time, C Outputs (90% to 10%)
1.2
3.2
0.8
2.3
1.4
2.8
1.6
2.9
1.6
6.0
2.0
5.1
1.4
2.0
2.8
2.5
7.3
ns
4.5
4.4
ns
5.0
8.1
ns
7.5
ns
ns
ns
ns
t_PZH, t_PZL
t_PHZ, t_PLZ
t_PLH
t_PHL
OEC
OEB
1.2
2.7
5.3
C
ns
1.4
2.8
4.9
1.7
3.5
5.9
B
ns
0.5
2.2
4.7
Note 6: All typical values are at V_CC = 3.3V, and T_A = 25°C.
www.fairchildsemi.com
4