m74hc123 STMicroelectronics, m74hc123 Datasheet

no-image

m74hc123

Manufacturer Part Number
m74hc123
Description
Dual Retriggerable Monostable Multivibrator
Manufacturer
STMicroelectronics
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
m74hc123B1
Manufacturer:
MOT
Quantity:
6 239
Part Number:
m74hc123B1
Manufacturer:
ST
0
Part Number:
m74hc123B1R
Manufacturer:
ST
0
Part Number:
m74hc123BI
Manufacturer:
ST
0
Part Number:
m74hc123F1
Manufacturer:
ST
0
Part Number:
m74hc123M
Manufacturer:
ST
0
Part Number:
m74hc123M1R
Manufacturer:
ST
Quantity:
20 000
Part Number:
m74hc123RM13TR
Manufacturer:
NSC
Quantity:
1 801
DESCRIPTION
The M74HC123 is an high speed CMOS
MONOSTABLE MULTIVIBRATOR fabricated with
silicon gate C
There are two trigger inputs, A INPUT (negative
edge) and B INPUT (positive edge). These inputs
are valid for slow rising/falling signals, (tr=tf=l sec).
The device may also be triggered by using the
CLR input
Schmitt-trigger input; after triggering the output
maintains the MONOSTABLE state for the time
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
HIGH SPEED :
t
LOW POWER DISSIPATION:
STAND BY STATE :
I
ACTIVE STATE :
I
HIGH NOISE IMMUNITY:
V
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
WIDE OPERATING VOLTAGE RANGE:
V
WIDE OUTPUT PULSE WIDTH RANGE :
t
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 123
PD
CC
CC
PLH
WOUT
OH
NIH
CC
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR
=4 A (MAX.) at T
=200 A (MAX.) at V
= 23 ns (TYP.) at V
| = I
(OPR) = 2V to 6V
= V
t
= 120 ns ~ 60 s OVER AT V
PHL
OL
NIL
= 4mA (MIN)
(positive-edge)
2
MOS technology.
= 28 % V
A
CC
=25°C
CC
CC
(MIN.)
= 6V
= 5V
because
CC
= 4.5 V
of
the
ORDER CODES
period determined by the external resistor Rx and
capacitor Cx. When Cx > 10nF and Rx > 10K
the output pulse width value is approsimatively
given by the formula : tW(OUT) = K · Cx · Rx.
(K 0.45).
Taking CLR low breaks this MONOSTABLE
STATE. If the next trigger pulse occurs during the
MONOSTABLE
MONOSTABLE period longer. Limit for values of
Cx and Rx : Cx : NO LIMIT
Rx : V
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
PACKAGE
TSSOP
SOP
DIP
V
cc
cc
DIP
< 3.0V 5K
> 3.0V 1K
M74HC123M1R
M74HC123B1R
TUBE
period
to 1M
to 1M
SOP
M74HC123
it
M74HC123RM13TR
M74HC123TTR
makes
T & R
TSSOP
1/12
the

Related parts for m74hc123

m74hc123 Summary of contents

Page 1

... OVER AT V WOUT PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 123 DESCRIPTION The M74HC123 is an high speed CMOS MONOSTABLE MULTIVIBRATOR fabricated with 2 silicon gate C MOS technology. There are two trigger inputs, A INPUT (negative edge) and B INPUT (positive edge). These inputs are valid for slow rising/falling signals, (tr=tf=l sec) ...

Page 2

... M74HC123 INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE INPUTS Don’t Care 2/12 PIN DESCRIPTION PIN 13, 5 14, 6 OUTPUTS CLR SYMBOL NAME AND FUNCTION Trigger Inputs (Negative ...

Page 3

... SYSTEM DIAGRAM This logic diagram has not be used to estimate propagation delays TIMING CHART M74HC123 3/12 ...

Page 4

... M74HC123 BLOCK DIAGRAM (1) Cx, Rx, Dx are external components. ( clamping diode. The external capacitor is charged to Vcc in the stand-by-state, i.e. no trigger. When the supply voltage is turned off scharged mainly trough an internal parasitic diode(see figures sufficiently large and Vcc decreases rapidly, there will be some possibility of damaging the I ...

Page 5

... The Maximum allowable values of Cx and Rx are a function of leakage of capacitor Cx, the leakage of device and leakage due to the board layout and surface resistance. Susceptibility to externally induced noise may occur for Rx > 1M Parameter Parameter 6.0V CC Vcc < 3V Vcc > 3V M74HC123 Value Unit - ...

Page 6

... M74HC123 DC SPECIFICATIONS Symbol Parameter V V High Level Input IH Voltage V Low Level Input IL Voltage V High Level Output OH Voltage V Low Level Output OL Voltage I Input Leakage I Current I Quiescent Supply CC Current I Active State CC’ Supply Current (1) (1) : Per Circuit 6/12 Test Condition (V) Min. 2.0 1.5 4.5 3.15 6.0 4.2 2.0 4.5 6 ...

Page 7

... Value = 25°C -40 to 85°C -55 to 125°C Typ. Max. Min. Max. Min 162 = CC(opr M74HC123 Unit Max. 110 315 355 240 110 110 ...

Page 8

... M74HC123 TEST CIRCUIT C = 50pF or equivalent (includes jig and probe capacitance pulse generator (typically OUT WAVEFORM : SWITCIHNG CHARACTERISTICS TEST WAVEFORM (f=1MHz; 50% duty cycle) 8/12 ...

Page 9

... Plastic DIP-16 (0.25) MECHANICAL DATA mm. DIM. MIN. a1 0. 17. TYP MAX. MIN. 0.020 1.65 0.030 0.5 0.25 20 8.5 2.54 7.1 5.1 3.3 1.27 M74HC123 inch TYP. MAX. 0.065 0.020 0.010 0.787 0.335 0.100 0.700 0.280 0.201 0.130 0.050 P001C 9/12 ...

Page 10

... M74HC123 DIM. MIN 0 0. 9 3.8 G 4 10/12 SO-16 MECHANICAL DATA mm. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.5 45° (typ.) 10 6.2 1.27 8.89 4.0 5.3 1.27 0.62 8° (max.) inch MIN. TYP. MAX. 0.068 0.003 0.007 0.064 0.013 0.018 0.007 0.010 0.019 0.385 0.393 0.228 0.244 0.050 0.350 0.149 0.157 ...

Page 11

... PIN 1 IDENTIFICATION 1 mm. TYP MAX. 1.2 0.15 1 1.05 0.30 0.20 5 5.1 6.4 6.6 4.4 4.48 0.65 BSC 8° 0.60 0. M74HC123 inch MIN. TYP. MAX. 0.047 0.002 0.004 0.006 0.031 0.039 0.041 0.007 0.012 0.004 0.0089 0.193 0.197 0.201 0.244 0.252 0.260 0.169 0.173 0.176 0.0256 BSC 0° 0.018 0.024 ...

Page 12

... M74HC123 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...

Related keywords