74HCT5555N PDF даташит
Спецификация 74HCT5555N изготовлена «Philips» и имеет функцию, называемую «Programmable delay timer with oscillator». |
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Детали детали
Номер произв | 74HCT5555N |
Описание | Programmable delay timer with oscillator |
Производители | Philips |
логотип |
23 Pages
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INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT5555
Programmable delay timer with
oscillator
Product specification
File under Integrated Circuits, IC06
September 1993
No Preview Available ! |
Philips Semiconductors
Programmable delay timer with oscillator
Product specification
74HC/HCT5555
FEATURES
• Positive and negative edge
triggered
• Retriggerable or non-retriggerable
• Programmable delay
minimum: 100 ns
maximum: depends on input
frequency and division ratio
• Divide-by range of 2 to 224
• Direct reset terminates output
pulse
• Very low power consumption in
triggered start mode
• 3 oscillator operating modes:
– RC oscillator
– Crystal oscillator
– External oscillator
• Device is unaffected by variations
in temperature and VCC when using
an external oscillator
• Automatic power-ON reset
• Schmitt trigger action on both
trigger inputs
• Direct drive for a power transistor
• Low power consumption in active
mode with respect to TTL type
timers
• High precision due to digital timing
• Output capability: 20 mA
• ICC category: MSI.
APPLICATIONS
• Motor control
• Attic fan timers
• Delay circuits
• Automotive applications
• Precision timing
• Domestic appliances.
GENERAL DESCRIPTION
The 74HC/HCT5555 are high-speed
Si-gate CMOS devices and are pin
compatible with low power Schottky
TTL (LSTTL). They are specified in
compliance with JEDEC standard
no. 7A.
The 74HC/HCT5555 are precision
programmable delay timers which
consist of:
• 24-stage binary counter
• integrated oscillator (using external
timing components)
• retriggerable/non-retriggerable
monostable
• automatic power-ON reset
• output control logic
• oscillator control logic
• overriding asynchronous master
reset (MR).
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns.
SYMBOL
PARAMETER
CONDITIONS
tPHL/tPLH
CI
CPD
propagation delay
A, B to Q/Q
MR to Q/Q
RS to Q/Q
input capacitance
power dissipation
capacitance per buffer
CL = 15 pF;
VCC = 5 V
notes 1 and 2
TYP. UNIT
24 24 ns
19 20 ns
26 28 ns
3.5 3.5 pF
23 36 pF
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW):
PD = CPD x VCC2 x fi + Σ(CL x VCC2 x fo) where:
fi = input frequency in MHz
fo = output frequency in MHz
Σ(CL x VCC2 x 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.
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
74HC/HCT5555N
74HC/HCT5555D
PINS
16
16
PACKAGE
PIN POSITION MATERIAL
DIL
SO16
plastic
plastic
CODE
SOT38Z
SOT109A
September 1993
2
No Preview Available ! |
Philips Semiconductors
Programmable delay timer with oscillator
Product specification
74HC/HCT5555
PINNING
SYMBOL
RS
RTC
CTC
A
B
RTR/RTR
Q
GND
Q
S0 − S3
OSC CON
MR
VCC
PIN DESCRIPTION
1 clock input/oscillator pin
2 external resistor connection
3 external capacitor connection
4 trigger input (positive-edge
triggered)
5 trigger input (negative-edge
triggered)
6 retriggerable/non-retriggerable
input (active HIGH/active LOW)
7 pulse output (active LOW)
8 ground (0 V)
9 pulse output (active HIGH)
10, 11, programmable input
12, 13
14 oscillator control
15 master reset input (active
HIGH)
16 positive supply voltage
handbook, halfpage
RS 1
R TC 2
C TC 3
A4
B
RTR/
RTR
5
6
Q7
GND 8
5555
16 VCC
15 MR
14
OSC
CON
13 S3
12 S2
11 S1
10 S0
9Q
MGA642
Fig.1 Pin configuration.
handbook, halfpage
10
11
12
13
2
3
14
1
6
4
5
15
X/Y
1
2
4
8
!G
RX
CX
16G17
17
&
0
15
1
I=0
R
S
R
CTRDIVm
[T]
Y=0
Y = 15
+
CT = 0
CT = m R
V16
MGA643
9
7
Fig.2 IEC logic diagram.
September 1993
3
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Номер в каталоге | Описание | Производители |
74HCT5555 | Programmable delay timer with oscillator | Philips |
74HCT5555D | Programmable delay timer with oscillator | Philips |
74HCT5555N | Programmable delay timer with oscillator | Philips |
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