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PDF 74HCT4060 Data sheet ( Hoja de datos )
| Número de pieza | 74HCT4060 | |
| Descripción | 14-stage binary ripple counter with oscillator | |
| Fabricantes | Philips | |
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Philips Semiconductors
14-stage binary ripple counter with oscillator
Product specification
74HC/HCT4060
FEATURES
• All active components on chip
• RC or crystal oscillator configuration
• Output capability: standard (except for RTC and CTC)
• ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT4060 are high-speed Si-gate CMOS
devices and are pin compatible with “4060” of the “4000B”
series. They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT4060 are 14-stage ripple-carry
counter/dividers and oscillators with three oscillator
terminals (RS, RTC and CTC), ten buffered outputs (Q3 to
Q9 and Q11 to Q13) and an overriding asynchronous
master reset (MR).
The oscillator configuration allows design of either RC or
crystal oscillator circuits. The oscillator may be replaced by
an external clock signal at input RS. In this case keep the
other oscillator pins (RTC and CTC) floating.
The counter advances on the negative-going transition of
RS. A HIGH level on MR resets the counter (Q3 to Q9 and
Q11 to Q13 = LOW), independent of other input conditions.
In the HCT version, the MR input is TTL compatible, but
the RS input has CMOS input switching levels and can be
driven by a TTL output by using a pull-up resistor to VCC.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns
SYMBOL PARAMETER
CONDITIONS
tPHL/ tPLH
tPHL
fmax
CI
CPD
propagation delay
RS to Q3
Qn to Qn+1
MR to Qn
maximum clock frequency
input capacitance
power dissipation capacitance per package
CL = 15 pF; VCC = 5 V
notes 1, 2 and 3
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW):
PD = CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) where:
fi = input frequency in MHz
fo = output frequency in MHz
∑ (CL × VCC2 × fo) = sum of outputs
CL = output load capacitance in pF
VCC = supply voltage in V
2. For HC the condition is VI = GND to VCC
For HCT the condition is VI = GND to VCC − 1.5 V
3. For formula on dynamic power dissipation see next pages.
TYPICAL
HC HCT
31 31
66
17 18
87 88
3.5 3.5
40 40
UNIT
ns
ns
ns
MHz
pF
pF
ORDERING INFORMATION
See “74HC/HCT/HCU/HCMOS Logic Package Information”.
December 1990
2
1 page | ||
| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet 74HCT4060.PDF ] | |
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