Datasheet

6
Switching Specifications Input t
r
, t
f
= 6ns
PARAMETER SYMBOL
TEST
CONDITIONS V
CC
(V)
25
o
C -40
o
C TO 85
o
C -55
o
C TO 125
o
C
UNITSTYP MAX MAX MAX
HC TYPES
Propagation Delay, Clock to
Output
t
PLH
, t
PHL
C
L
= 50pF 2 - 200 250 300 ns
4.5 - 40 50 60 ns
C
L
= 15pF 5 17 - - - ns
CL = 50pF 6 - 34 43 51 ns
Propagation Delay, MR to
Output
t
PHL
C
L
= 50pF 2 - 175 220 265 ns
4.5 - 35 44 53 ns
C
L
= 15pF 5 12 - - - ns
CL = 50pF 6 - 30 37 45 ns
Propagation Delay Output
Enable to Q (Figure 6)
t
PLZ
, t
PHZ
t
PZL
, t
PZH
CL = 50pF 2 150 190 225 ns
C
L
= 50pF 4.5 30 38 45 ns
C
L
= 15pF 5 12 - - - ns
CL = 50pF 6 26 33 38 ns
Output Transition Times t
TLH
, t
THL
C
L
= 50pF 2 - 60 75 90 ns
4.5 - 12 15 18 ns
6 - 10 13 15 ns
Maximum Clock Frequency f
MAX
C
L
= 15pF 5 60 - - - MHz
Input Capacitance C
IN
---1010 10pF
Three-State Output
Capacitance
C
O
---1010 10pF
Power Dissipation
Capacitance
(Notes 4, 5)
C
PD
- 5 29 - - - pF
HCT TYPES
Propagation Delay, Clock to
Output
t
PLH
, t
PHL
C
L
= 50pF 4.5 - 40 50 60 ns
C
L
= 15pF 5 17 - - - ns
Propagation Delay, MR to
Output
t
PHL
C
L
= 50pF 4.5 - 44 55 66 ns
C
L
= 15pF 5 18 - - - ns
Propagation Delay Output
Enable to Q (Figure 6)
t
PZL
, t
PZH
CL = 50pF 2 150 190 225 ns
C
L
= 50pF 4.5 30 38 45 ns
C
L
= 15pF 5 14 - - - ns
CL = 50pF 6 26 33 38 ns
Output Transition Times t
TLH
, t
THL
C
L
= 50pF 4.5 - 15 19 22 ns
Maximum Clock Frequency f
MAX
C
L
= 15pF 5 60 - - - MHz
Input Capacitance C
IN
---1010 10pF
Power Dissipation
Capacitance
(Notes 4, 5)
C
PD
- 5 34 - - - pF
NOTES:
4. C
PD
is used to determine the dynamic power consumption, per package.
5. P
D
=V
CC
2
f
i
+ (C
L
V
CC
2
+f
O
) where f
i
= Input Frequency, f
O
= Input Frequency, C
L
= Output Load Capacitance, V
CC
= Supply Voltage.
CD54HC173, CD74HC173, CD54HCT173, CD74HCT173