74hct5555 NXP Semiconductors, 74hct5555 Datasheet - Page 2

• Manufacturer Part Number: 74hct5555
• Description: Programmable Delay Timer With Oscillator
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
APPLICATIONS
September 1993
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 2
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 V
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
I
Motor control
Attic fan timers
Delay circuits
Automotive applications
Precision timing
Domestic appliances.
Programmable delay timer with oscillator
CC
category: MSI.
CC
when using
24
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:
QUICK REFERENCE DATA
GND = 0 V; T
Notes
1. C
2. For HC the condition is V
ORDERING INFORMATION
t
C
C
74HC/HCT5555N
74HC/HCT5555D
SYMBOL
PHL
24-stage binary counter
integrated oscillator (using external
timing components)
I
PD
EXTENDED TYPE
For HCT the condition is V
/t
PD
PLH
P
f
f
C
V
NUMBER
i
o
(C
D
CC
= input frequency in MHz
L
is used to determine the dynamic power dissipation (P
= output frequency in MHz
= output load capacitance in pF
= C
L
= supply voltage in V
x V
propagation delay
input capacitance
power dissipation
capacitance per buffer
PD
amb
CC
A, B to Q/Q
MR to Q/Q
RS to Q/Q
x V
= 25 C; t
2
PARAMETER
2
x f
CC
o
2
) = sum of outputs.
x f
PINS
i
16
16
r
+ (C
= t
I
= GND to V
I
f
= GND to V
= 6 ns.
L
PIN POSITION
x V
CC
C
V
notes 1 and 2
SO16
DIL
L
CC
2
CONDITIONS
= 15 pF;
x f
CC
= 5 V
retriggerable/non-retriggerable
monostable
automatic power-ON reset
output control logic
oscillator control logic
overriding asynchronous master
reset (MR).
CC
o
) where:
PACKAGE
1.5 V.
74HC/HCT5555
MATERIAL
plastic
plastic
Product specification
24
19
26
3.5
23
TYP.
D
24
20
28
3.5
36
in W):
SOT109A
SOT38Z
CODE
ns
ns
ns
pF
pF
UNIT