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CD74FCT821A Scheda tecnica(PDF) 4 Page - Texas Instruments

Il numero della parte CD74FCT821A
Spiegazioni elettronici  BiCMOS FCT Interface Logic, 10- Bit D-Type Flip-Flops, Three-State
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

CD74FCT821A Scheda tecnica(HTML) 4 Page - Texas Instruments

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Switching Specifications Over Operating Range FCT Series tr, tf = 2.5ns, CL = 50pF, RL (See Figures)
PARAMETER
SYMBOL
VCC (V)
25oC0oC TO 70oC
UNITS
TYP
MIN
MAX
Propagation Delays (Note 6)
Clock to Q
CD74FCT821A
tPLH, tPHL
5
7.5
1.5
10
ns
Clock to Q
CD74FCT822A
tPLH, tPHL
5
7.5
1.5
10
ns
Output Enable to Q
CD74FCT821A
tPZL, tPZH
5
9
1.5
12
ns
Output Disable to Q
CD74FCT821A
tPLZ, tPHZ
5
6
1.5
8
ns
Output Enable to Q
CD74FCT822A
tPZL, tPZH
5
9
1.5
12
ns
Output Disable to Q
CD74FCT822A
tPLZ, tPHZ
5
6
1.5
8
ns
Power Dissipation Capacitance (Note 7)
CPD
pF
Minimum (Valley) VOH During Switching of Other Outputs
(Output Under Test Not Switching)
VOHV
5
0.5 Typical at 25oCV
Maximum (Peak) VOL During Switching of Other Outputs
(Output Under Test Not Switching)
VOLP
5
1 Typical at 25oCV
Input Capacitance
CI
---
10
pF
Three-State Output Capacitance
CO
---
15
pF
NOTES:
6. 5V: Minimum is at 5.25V for 0oC to 70oC, Maximum is at 4.75 for 0oc t0 70oC, Typical is at 5V.
7. CPD, measured per flip-flop, is used to determine the dynamic power consumption.
PD (per package) = VCC ICC + Σ (VCC
2 f
I CPD + VO
2 f
OCL + VCC ∆ICC D) where:
VCC = supply voltage
∆ICC = flow through current x unit load
CL = output load capacitance
D = duty cycle of input high
fO = output frequency
fI = input frequency
Prerequisite for Switching
PARAMETER
SYMBOL
VCC (V)
25oC0oC TO 70oC
UNITS
TYP
MIN
MAX
Maximum Frequency (Note 8)
fMAX
5
-
70
-
MHz
Data to Clock Setup Time
tSU
5-4-
ns
Data to Clock Hold Time
tH
5-2-
ns
Clock Pulse Width
tW
5-7-
ns
NOTE:
8. 5V: Minimum is at 4.75V for 0oC to 70oC, Typical is at 5V.
CD74FCT821A, CD74FCT822A


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