CD74FCT646 Datasheet, PDF (5/8 Pages) Texas Instruments – BiCMOS FCT Interface Logic, Octal Bus Transceiver/Register, Three-State

CD74FCT646
Switching Specifications Over Operating Range FCT Series t_r, t_f = 2.5ns, C_L = 50pF, R_L (Figure 1) (Note 7)
25^oC
0^oC TO 70^oC
Propagation Delays
PARAMETER
SYMBOL
V_CC (V) TYP
MIN
MAX
(Note 8)
Store An → Bn, Store Bn → An, An → Bn, Bn → An
Select to Data
Output Enable to Output
Output Disable to Output
Power Dissipation Capacitance
t_PLH, t_PHL
5
6.8
2
9
t_PLH, t_PHL
5
8.3
2
11
t_PZL, t_PZH
5
10.5
2
14
t_PLZ, t_PHZ
5
6.8
2
9
C_PD
-
-
-
-
(Note 8)
Minimum (Valley) V_OHV During Switching of
Other Outputs (Output Under Test Not Switching)
V_OHV
5
0.5
-
-
Maximum (Peak) V_OLP During Switching of
Other Outputs (Output Under Test Not Switching)
V_OLP
5
1
-
-
Input Capacitance
C_I
-
-
-
10
Input/Output Capacitance
C_I/O
-
-
-
15
NOTES:
7. 5V: Minimum is at 5.25V for 0^oC to 70^oC, Maximum is at 4.75V for 0^oC to 70^oC, Typical is at 5V.
8. C_PD, measured per flip-flop, is used to determine the dynamic power consumption.
P_D (per package) = V_CC I_CC + Σ(V_CC2 f_I C_PD + V_O2 f_OC_L + V_CC ∆I_CC D) where:
V_CC = supply voltage
∆I_CC = flow through current x unit load
C_L = output load capacitance
D = duty cycle of input high
f_O = output frequency
f_I = input frequency
Prerequisite For Switching
25^oC
0^oC TO 70^oC
PARAMETER
Maximum Frequency
SYMBOL
V_CC (V)
TYP
MIN
MAX
f_MAX
5
-
85
-
(Note 9)
Data to Clock Setup Time
t_SU
5
Data to Clock Hold Time
t_H
5
Clock Pulse Width
t_W
5
NOTE:
9. 5V: Minimum is at 4.75V for 0^oC to 70^oC, Typical is at 5V.
-
4
-
-
2
-
-
6
-
UNITS
ns
ns
ns
ns
pF
V
V
pF
pF
UNITS
ns
ns
ns
ns
8-71