September 2006
rev 0.2
Power Supply Characteristics for 1.8V LVTTL Outputs
1
Symbol
I
DDQ
I
DDQQ
I
DDD
I
DDDQ
I
TOT
I
TOTQ
PCS2P5T915A
Parameter
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
Test Conditions
2
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
= 1.8V., F
REFERENCE
V
DDQ
= 1.8V., F
REFERENCE
V
DDQ
= 1.8V., F
REFERENCE
V
DDQ
= 1.8V., F
REFERENCE
CLOCK
=
CLOCK
=
CLOCK
=
3
Typ
20
0.1
20
55
25
40
50
120
Max
30
0.3
40
80
40
60
100
240
Unit
mA
mA
µA/MHz
µA/MHz
mA
mA
100MHz, C
L
= 15pF
200MHz, C
L
= 15pF
100MHz, C
L
= 15pF
CLOCK
= 200MHz, C
L
= 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 1.8V LVTTL
Symbol
V
DIF
V
X
V
THI
t
R
, t
F
Input Signal Swing
1
Differential Input Signal Crossing Point
2
Input Timing Measurement Reference Level
3
Input Signal Edge Rate
4
Parameter
Value
V
DDI
V
DDI
/2
Crossing Point
1.8
Units
V
mV
V
V/nS
Notes:1.
V
DDI
is the nominal 1.8V supply (1.8V ± 0.15V) of the part or source driving the input. A nominal 1.8V 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 900mV 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 1.8V/nS or greater is to be maintained in the 20% to 80% range of the input waveform.
Single-ended Input AC Test Conditions for 1.8V LVTTL
Symbol
V
IH
V
IL
V
THI
t
R
, t
F
Input HIGH Voltage
1
Input LOW Voltage
Input Timing Measurement Reference Level
2
Input Signal Edge Rate
3
Parameter
Value
V
DDI
0
V
DDI
/2
2
Units
V
V
mV
V/nS
Notes: 1. V
DDI
is the nominal 1.8V supply (1.8V ± 0.15V) of the part or source driving the input.
2. A nominal 900mV timing measurement reference level is specified to allow constant, repeatable results in an automatic test equipment (ATE)
environment.
3. 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 ]
