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PDF M54HC123AF1R Datasheet ( Hoja de datos )

Número de pieza M54HC123AF1R
Descripción DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR
Fabricantes ST Microelectronics 
Logotipo ST Microelectronics Logotipo

Total 14 Páginas
		
M54HC123AF1R Hoja de datos, Descripción, Manual
M54HC123/123A
M74HC123/123A
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR
. HIGH SPEED
tPD = 25 ns (TYP) at VCC = 5V
. LOW POWER DISSIPATION
STANDBY STATE ICC=4 µA (MAX.) AT TA=25°C
ACTIVE STATE ICC = 200 µA (TYP.) AT VCC=5V
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
IOH = IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. WIDE OUTPUT PULSE WIDTH RANGE
tWOUT = 120 ns 60 s OVER AT VCC = 4.5 V
. PIN AND FUNCTION COMPATIBLE WITH
54/74LS123
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXF1R M74HCXXXM1R
M74HCXXXB1R M74HCXXXC1R
DESCRIPTION
The M54/74HC123 is a high speed CMOS MONO-
STABLE multivibrator fabricated with silicon gate
C2MOS technology. It achieves the high speed
operation similar to equivalent LSTTL while main-
taining the CMOS low power dissipation. There are
two trigger inputs, A INPUT (negative edge) and 8
INPUT (positive edge). These inputs are valid for
slow rising/falling signals, (tr = tf = I sec). The device
may also be triggered by using the CLR input (posi-
tive-edge) because of the Schmitt-trigger input ;
after triggering the output maintains the MONO-
STABLE state for the time period determined by the
external resistor Rx and capacitor Cx. When Cx
10nF and Rx 10K, the output pulse width value
is approssimatively given by the formula: tw(out) = K
Cx Rx.
Two different pulse width constant are available:
K 0.45 for HC123 K 1 for HC123A.
Taking CLR low breaks this MONOSTABLE
STATE. If the next trigger pulse occurs during the
MONOSTABLEperiod it makes the MONOSTABLE
period longer. Limit for values of Cx and Rx :
Cx : NO LIMIT
Rx : VCC < 3.0 V 5 K to 1 M
VCC 3.0 V 1 K to 1 M
All inputs are equipped with protection circuits
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
October 1993
1/14

1 page

M54HC123AF1R pdf
M54/M74HC123/123A
PIN DESCRIPTION
PIN No
1, 9
2, 10
3, 11
4, 12
7
13, 5
14, 6
15
8
16
SYMBOL
1A, 2A
1B, 2B
1CLR,
2CLR
1Q, 2Q
2REXT/CEXT
1Q, 2Q
1CEXT
2CEXT
1REXT/CEXT
GND
VCC
NAME AND FUNCTION
Trigger Inputs (Negative
Edge Triggered)
Trigger Inputs (Positive
Edge Triggered)
Direct Reset LOW and
Trigger Action at Positive
Edge
Outputs (Active LOW)
External Resistor
Capacitor Connection
Outputs (Active HIGH)
External Capacitor
Connection
External Resistor
Capacitor Connection
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOL
ABSOLUTE MAXIMUM RATING
Symbol
Parameter
Value
Unit
VCC Supply Voltage
-0.5 to +7
V
VI DC Input Voltage
-0.5 to VCC + 0.5
V
VO DC Output Voltage
-0.5 to VCC + 0.5
V
IIK DC Input Diode Current
± 20 mA
IOK DC Output Diode Current
± 20 mA
IO DC Output Source Sink Current Per Output Pin
ICC or IGND DC VCC or Ground Current
± 25 mA
± 50 mA
PD Power Dissipation
Tstg Storage Temperature
500 (*)
-65 to +150
mW
oC
TL Lead Temperature (10 sec)
300 oC
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied.
(*) 500 mW: 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC
5/14

5 Page

M54HC123AF1R arduino
DIM.
A
B
D
E
e3
F
G
H
L
M
N
P
Q
M54/M74HC123/123A
Ceramic DIP16/1 MECHANICAL DATA
MIN.
0.38
2.29
0.4
1.17
0.22
0.51
7.8
mm
TYP.
3.3
17.78
MAX.
20
7
2.79
0.55
1.52
0.31
1.27
10.3
8.05
5.08
MIN.
0.015
0.090
0.016
0.046
0.009
0.020
0.307
inch
TYP.
0.130
0.700
MAX.
0.787
0.276
0.110
0.022
0.060
0.012
0.050
0.406
0.317
0.200
P053D
11/14

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