74HC5555D,118 查看數據表（PDF） - NXP Semiconductors.
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74HC5555D,118 Datasheet PDF : 23 Pages
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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
B5
RTR/
RTR 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
CTRDIVm
[T]
1
0 Y=0
2
4
8
15 Y = 15
!G
RX
CX
16G17
17
&
1
+
CT = 0
CT = m R
9
S
I=0
R
7
V16
R
MGA643
Fig.2 IEC logic diagram.
September 1993
3
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