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CD74HC4060 Datasheet, PDF (8/10 Pages) Texas Instruments – High Speed CMOS Logic 14-Stage Binary Counter with Oscillator
◁
CD74HC4060, CD74HCT4060
Switching Specifications Input tr, tf = 6ns (Continued)
PARAMETER
Qn to Qn+1
TEST
SYMBOL CONDITIONS VCC (V) MIN
tPLH, tPHL CL = 50pF
2
-
4.5
-
25oC
TYP MAX
-
-
-
16
-40oC TO
85oC
MIN MAX
-
-
-
20
-55oC TO
125oC
MIN MAX UNITS
-
-
ns
-
24
ns
MR to Qn
CL = 15pF
5
-
6
-
-
-
-
-
ns
CL = 50pF
6
-
-
-
-
-
-
-
ns
tPHL
CL = 50pF
2
-
-
-
-
-
-
-
ns
4.5
-
-
44
-
55
-
66
ns
Output Transition Time
CL = 15pF
5
-
17
-
-
-
-
-
ns
CL = 50pF
6
-
-
-
-
-
-
-
ns
tTHL, tTLH CL = 50pF
2
-
-
-
-
-
-
-
ns
4.5
-
-
15
-
19
-
22
ns
6
-
-
-
-
-
-
-
ns
Input Capacitance
CI
(TBD)
Propagation Dissipation
Capacitance
CPD
-
-
-
40
-
-
-
-
-
pF
NOTES:
7. CPD is used to determine the dynamic power consumption, per package.
8. PD = CPD VCC2 fi ∑(CL VCC2 fi/M) where M = 21, 22, 23, ...214, fi = input frequency, CL = output load capacitance.
TYPICAL LIMIT VALUES FOR RX AND CX
PARAMETER
TEST
CONDITIONS VOLTAGE
TYPICAL
MAXIMUM
LIMITS
RX Minimum
CX > 1000pF
2
CX > 10pF
4.5
CX > 10pF
6
RX Maximum
CX > 10pF
2
CX > 10pF
4.5
CX > 10pF
6
CX Minimum
RX > 10KΩ
2
RX > 10KΩ
4.5
RX > 10KΩ
6
RX = 1KΩ
2
RX = 1KΩ
4.5
RX = 1KΩ
6
Maximum
CX = 1000pF,
2
Astable Oscillator RX = 1KΩ
Frequency
CX = 100pF,
4.5
RX = 1KΩ
CX = 100pF,
6
RX = 1KΩ
NOTE:
1KΩ
20MΩ
10pF
1000pF
10pF
10pF
0.5MHz
(Note 9)
3MHz
(Note 9)
3MHz
(Note 9)
9. At very high frequencies f = 1/2.2 RXCX no longer gives an
yaccurate approximation.
102
10
1
10-1
10-2
10-3
10-4
TA = 25oC
RX = 1KΩ
10KΩ
100KΩ
1MΩ
10MΩ
10-5
10-1 100 10
102
103
104 105
106
OSCILLATOR FREQUENCY (Hz)
NOTE: OSC Frequency ≈ 1/2.2 RXCX
For 1MΩ > RX > 1KΩ, CX > 10pF, f < 1MHz
FIGURE 2. FREQUENCY OF ON-BOARD OSCILLATOR AS A
FUNCTION OF CX AND RX
8
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