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GTLP1B151 Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part No. GTLP1B151
Description  1-Bit LVTTL/GTLP Transceiver with Separate LVTTL Port and Feedback Path
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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4
DC Electrical Characteristics (Continued)
Note 3: All typical values are at VCC = 3.3V and TA = 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 VCC or GND.
Note: GTLP VREF and VTT are specified to 2% tolerance since signal integrity and noise margin can be significantly degraded if these supplies are noisy. In
addition, VTT and RTERM 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, VREF can be adjusted to optimize noise margin.
AC Electrical Characteristics
Over recommended range of supply voltage and operating free-air temperature, VREF = 1.0V (unless otherwise noted).
CL = 30 pF for B Port and CL = 50 pF for C Port.
Note 6: All typical values are at VCC = 3.3V, and TA = 25°C.
Symbol
Test Conditions
Min
Typ
Max
Units
(Note 3)
IPU/PD
All Ports
VCC = 0 to 1.5V
VI = 0 to 3.45V
30
µA
ICC
A or B Ports
VCC = 3.45V
Outputs HIGH
11
mA
or C Port
IO = 0
Outputs LOW
11
VI = VCC/VTT or GND
Outputs Disabled
11
∆I
CC
A Port and
VCC = 3.45V,
One Input at VCC
2mA
(Note 5)
Control Pins
A or Control Inputs at VCC or GND −0.6V
Ci
Control Pins
VI = VCC or 0
3
pF
and A Port
CO
C Port
VI = VCC or 0
5
pF
CI/O
B Port
VI = VTT or 0
5.5
pF
Symbol
From
To
Min
Typ
Max
Unit
(Input)
(Output)
(Note 6)
tPLH
AB
1.2
3.2
7.3
ns
tPHL
0.8
2.3
4.5
tPLH
BC
1.4
2.8
4.4
ns
tPHL
1.6
2.9
5.0
tPLH
AC
1.6
6.0
8.1
ns
tPHL
2.0
5.1
7.5
tRISE
Transition Time, B Outputs (20% to 80%)
1.4
ns
tFALL
Transition Time, B Outputs (80% to 20%)
2.0
ns
tRISE
Transition Time, C Outputs (10% to 90%)
2.8
ns
tFALL
Transition Time, C Outputs (90% to 10%)
2.5
ns
tPZH, tPZL
OEC
C
1.2
2.7
5.3
ns
tPHZ, tPLZ
1.4
2.8
4.9
tPLH
OEB
B
1.7
3.5
5.9
ns
tPHL
0.5
2.2
4.7




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