September 2006
rev 0.2
Power Supply Characteristics for 2.5V LVTTL Outputs
1
Symbol Parameter
Test Conditions
2
I
DDQ
I
DDQQ
I
DDD
I
DDDQ
I
TOT
I
TOTQ
Quiescent V
DD
Power
Supply Current
Quiescent V
DDQ
Power
Supply Current
Dynamic V
DD
Power Supply
Current per Output
Dynamic V
DDQ
Power
Supply Current per Output
Total Power V
DD
Supply
Current
Total Power V
DDQ
Supply
Current
V
DDQ
= Max., Reference Clock = LOW
Outputs enabled, All outputs unloaded
V
DDQ
= Max., Reference Clock = LOW
3
Outputs enabled, All outputs unloaded
V
DD
= Max., V
DDQ
= Max., C
L
= 0pF
V
DD
= Max., V
DDQ
= Max., C
L
= 0pF
V
DDQ
= 2.5V., F
REFERENCE CLOCK
= 100MHz, C
L
= 15pF
V
DDQ
= 2.5V., F
REFERENCE
V
DDQ
= 2.5V., F
REFERENCE
CLOCK
=
3
PCS2P5T915A
Typ
20
0.1
25
45
25
45
40
100
Max
30
0.3
40
70
40
70
80
200
Unit
mA
mA
µA/MHz
µA/MHz
mA
mA
200MHz, C
L
= 15pF
200MHz, C
L
= 15pF
V
DDQ
= 2.5V., F
REFERENCE CLOCK
= 100MHz, C
L
= 15pF
CLOCK
=
Notes:
1. These power consumption characteristics are for all the valid input interfaces and cover the worst case input and output interface combinations.
2. The termination resistors are excluded from these measurements.
3. If the differential input interface is used, the true input is held LOW and the complementary input is held HIGH.
Differential Input AC Test Conditions for 2.5V LVTTL
Symbol
Parameter
V
DIF
V
X
V
THI
t
R
, t
F
Input Signal Swing
1
2
3
Value
V
DD
V
DD
/2
Crossing Point
2.5
Units
V
V
V
V/nS
Differential Input Signal Crossing Point
Input Signal Edge Rate
4
Input Timing Measurement Reference Level
Notes:
1. A nominal 2.5V peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE)
environment. Compliant devices must meet the V
DIF
(AC) specification under actual use conditions.
2. A nominal 1.25V crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment.
Compliant devices must meet the V
X
specification under actual use conditions.
3. In all cases, input waveform timing is marked at the differential cross-point of the input signals.
4. The input signal edge rate of 2.5V/nS or greater is to be maintained in the 20% to 80% range of the input waveform
.
Single-ended Input AC Test Conditions for 2.5V LVTTL
Symbol
Parameter
V
IH
V
IL
V
THI
t
R
, t
F
Input HIGH Voltage
Input LOW Voltage
Input Timing Measurement Reference Level
Input Signal Edge Rate
2
1
Value
V
DD
0
V
DD
/2
2
Units
V
V
V
V/nS
Notes: 1. A nominal 1.25V timing measurement reference level is specified to allow constant, repeatable results in an automatic test equipment (ATE)
environment.
2. The input signal edge rate of 2V/nS or greater is to be maintained in the 10% to 90% range of the input waveform.
Low Voltage (2.5V) High Accuracy 1:5 Clock Fan-Out Buffer
Notice: The information in this document is subject to change without notice.
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PULSECORE [ PulseCore Semiconductor ]
