PI74SSTVF16857
14-Bit Registered Buffer
7
PS8656A 05/27/03
Voltage and Current Waveforms
Input Active and Inactive Times
Voltage Waveforms - Pulse Duration
Voltage Waveforms - Setup and Hold Times
Test Circuit and Switching Waveforms
Notes:
8. C
L
includes probe and jig capacitance.
9. I
DD
tested with clock and data inputs held at V
DD
or GND, and I
O
= 0mA.
10. All input pulses are supplied by generators having the following characteristics:
PRR ≤10 MHz, Z
O
= 50Ω. Input slew rate = 1V/ns ±20% (unless otherwise specified).
11. The outputs are measured one at a time with one transition per measurement.
12. V
TT
= V
REF
= V
DDQ
/2
13. V
IH
= V
REF
+ 310mV (ac voltage levels) for SSTL inputs. V
IH
= V
DD
for LVCMOS input.
14. V
IL
= V
REF
– 310mV (ac voltage levels) for SSTL inputs. V
IL
= GND for LVCMOS input.
15. t
PLH
and t
PHL
are the same as t
pd
.
Parameter Measurement Information
Load Circuit
Input
V
IL
V
REF
V
REF
t
w
V
IH
Input
Timing
Input
t
h
t
su
V
IL
V
ICR
V
REF
V
REF
V
I(PP)
V
IH
Voltage Waveforms - Propagation Delay Times
Timing
Input
Output
V
ICR
t
PLH
t
PHL
V
ICR
V
I(PP)
V
OH
V
TT
V
TT
V
OL
LVCMOS
RESET
Input
Output
t
PHL
V
DD
/2
V
OH
V
IH
V
IL
V
TT
V
OL
Voltage Waveforms - Propagation Delay Times
500Ω
From Output
Under Test
CL = 30pF
(8)
Test Point
LVCMOS
RESET
Input
I
DD
(9)
V
DD
V
DD
/2
t
inact
0V
I
DDH
10%
90%
I
DDL
t
act
