AC Electrical Characteristics † - Serial Streams (Figures 11, 14, 15 and 16)
Characteristics
Sym
Min Typ ‡ Max Units
Test Conditions
Inputs
1
2
3
4
5
6
7
STo0/7 Delay-Active to High Z
STo0/7 Delay-High Z to Active
STo0/7 Delay-Active to Active
STo0/7 Hold Time
t
SAZ
SZA
20
25
30
25
50
60
65
45
45
50
75
80
ns
ns
ns
ns
ns
ns
ns
RL=1 KΩ*, CL=150 pF
CL=150 pF
t
125
125
tSAA
CL=150 pF
tSOH
CL=150 pF
Output Driver Enable Delay
External Control Hold Time
External Control Delay
Outputs
t
OED
125
110
-20
RL=1 KΩ*, CL=150 pF
CL=150 pF
t
XCH
0
t
XCD
CL=150 pF
8
9
Serial Input Setup Time
Serial Input Hold Time
t
SIS
-40
ns
ns
t
SIH
90
† Timing is over recommended temperature & power supply voltages.
‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.
High Impedance is measured by pulling to the appropriate rail with RL , with timing corrected to cancel time taken to discharge C
*
.
L
Figure 14 Serial Outputs and External
Control
Figure 15 Output Driver Enable
2.0V
ODE
0.8V
Bit Cell Boundary
2.0V
C4i
2.4V
STo0
0.8V
to
ST o7
0.4V
t
SOH
t
t
OED
OED
STo0
to
STo7
2.4V
0.4V
t
SAZ
STo0 2.4V
to
STo7 0.4V
Figure 16 Serial Inputs
t
SZA
t
SOH
Bit Cell Boundaries
STo0
to
STo7
2.4V
0.4V
2.0V
0.8V
C4i
t
SAA
t
SIH
t
XCH
2.0V
0.8V
STo0
2.4V
0.4V
to
CSTo
STo7
t
SIS
t
XCD
10
© IMP, Inc.
IMP8980D DS-5-00
A1PROS [ A1 PROS CO., LTD. ]
