November 2006
ASM2P5T905A
rev 0.2
Power Supply Characteristics for 2.5V LVTTL Outputs1
Symbol
Parameter
Quiescent VDD Power Supply
Current
Test Conditions2
Typ
20
Max
30
Unit
mA
VDDQ= Max., Reference Clock = LOW3
Outputs enabled, All outputs unloaded
VDDQ= Max., Reference Clock = LOW3
Outputs enabled, All outputs unloaded
IDDQ
Quiescent VDDQ Power Supply
Current
IDDQQ
IDDD
0.1
15
30
20
30
30
70
0.3
20
mA
Dynamic VDD Power Supply
Current per Output
Dynamic VDDQ Power Supply
Current per Output
V
DD= Max., VDDQ= Max., CL= 0pF
µA/MHz
µA/MHz
IDDDQ
VDD= Max., VDDQ= Max., CL= 0pF
40
VDDQ= 2.5V, FREFERENCE CLOCK= 100MHz,
CL= 15pF
40
Total Power VDD Supply
Current
ITOT
mA
mA
VDDQ= 2.5V, FREFERENCE CLOCK= 200MHz,
CL= 15pF
50
VDDQ= 2.5V, FREFERENCE CLOCK= 100MHz,
CL= 15pF
50
Total Power VDDQ Supply
Current
ITOTQ
VDDQ= 2.5V, FREFERENCE CLOCK= 200MHz,
CL= 15pF
100
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
Input Signal Swing1
V
V
Differential Input Signal Crossing Point2
Input Timing Measurement Reference Level3
Input Signal Edge Rate4
Crossing Point
2.5
V
V/nS
NOTES:
1. A nominal 2.5V peak-to-peak input pulse level is specified to allow consistent, repeatable results in 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
VIL
VTHI
tR, tF
Parameter
Value
VDD
0
VDD/2
2
Units
Input HIGH Voltage
Input LOW Voltage
V
V
Input Timing Measurement Reference Level1
Input Signal Edge Rate2
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.
2.5V Single Data Rate 1:5 Clock Buffer Terabuffer
10 of 19
Notice: The information in this document is subject to change without notice.
PULSECORE [ PulseCore Semiconductor ]
