September 2006
PCS2P5T915A
rev 0.2
Power Supply Characteristics for 2.5V LVTTL Outputs1
Symbol Parameter
Test Conditions2
Typ Max Unit
V
DDQ= Max., Reference Clock = LOW3
Quiescent VDD Power
IDDQ
IDDQQ
IDDD
20
0.1
25
45
30
0.3
40
70
mA
Outputs enabled, All outputs unloaded
Supply Current
Quiescent VDDQ Power
Supply Current
VDDQ= Max., Reference Clock = LOW3
Outputs enabled, All outputs unloaded
mA
Dynamic VDD Power Supply
Current per Output
VDD= Max., VDDQ= Max., CL= 0pF
µA/MHz
µA/MHz
Dynamic VDDQ Power
IDDDQ
VDD= Max., VDDQ= Max., CL= 0pF
Supply Current per Output
VDDQ= 2.5V., FREFERENCE CLOCK= 100MHz, CL= 15pF
VDDQ= 2.5V., FREFERENCE CLOCK= 200MHz, CL= 15pF
VDDQ= 2.5V., FREFERENCE CLOCK= 100MHz, CL= 15pF
25
45
40
70
Total Power VDD Supply
Current
ITOT
mA
40
100
80
200
Total Power VDDQ Supply
Current
ITOTQ
mA
VDDQ= 2.5V., FREFERENCE CLOCK= 200MHz, CL= 15pF
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
VDIF
VX
VTHI
tR, tF
Parameter
Value
VDD
VDD/2
Units
V
V
V
V/nS
Input Signal Swing1
Differential Input Signal Crossing Point2
Input Timing Measurement Reference Level3
Input Signal Edge Rate4
Crossing Point
2.5
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 VDIF (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 VX 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
VIH
Parameter
Input HIGH Voltage
Value
VDD
0
Units
V
VIL
Input LOW Voltage
V
VTHI
Input Timing Measurement Reference Level1
Input Signal Edge Rate2
VDD/2
V
tR, tF
2
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
10 of 23
Notice: The information in this document is subject to change without notice.
PULSECORE [ PulseCore Semiconductor ]
