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PDF CD4538BC Data sheet ( Hoja de datos )
| Número de pieza | CD4538BC | |
| Descripción | Dual Precision Monostable | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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October 1987
Revised January 1999
CD4538BC
Dual Precision Monostable
General Description
The CD4538BC is a dual, precision monostable multivibra-
tor with independent trigger and reset controls. The device
is retriggerable and resettable, and the control inputs are
internally latched. Two trigger inputs are provided to allow
either rising or falling edge triggering. The reset inputs are
active LOW and prevent triggering while active. Precise
control of output pulse-width has been achieved using lin-
ear CMOS techniques. The pulse duration and accuracy
are determined by external components RX and CX. The
device does not allow the timing capacitor to discharge
through the timing pin on power-down condition. For this
reason, no external protection resistor is required in series
with the timing pin. Input protection from static discharge is
provided on all pins.
Features
s Wide supply voltage range: 3.0V to 15V
s High noise immunity: 0.45 VCC (typ.)
s Low power TTL compatibility: Fan out of 2 driving 74L
or 1 driving 74LS
s New formula: PWOUT = RC (PW in seconds, R in Ohms,
C in Farads)
s ±1.0% pulse-width variation from part to part (typ.)
s Wide pulse-width range: 1 µs to ∞
s Separate latched reset inputs
s Symmetrical output sink and source capability
s Low standby current: 5 nA (typ.) @ 5 VDC
s Pin compatible to CD4528BC
Ordering Code:
Order Number Package Number
Package Description
CD4538BCM
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
CD4538BCWM
M16B
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body
CD4538BCN
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Truth Table
Pin Assignments for DIP and SOIC
Top View
Inputs
Outputs
Clear A B Q Q
L XXLH
X HXLH
X XLLH
H L ↓
H ↑ H
H = HIGH Level
L = LOW Level
↑ = Transition from LOW-to-HIGH
↓ = Transition from HIGH-to-LOW
= One HIGH Level Pulse
= One LOW Level Pulse
X = Irrelevant
© 1999 Fairchild Semiconductor Corporation DS006000.prf
www.fairchildsemi.com
1 page  
Absolute Maximum Ratings(Note 1)
(Note 2)
DC Supply Voltage (VDD)
Input Voltage (VIN)
Storage Temperature Range (TS)
Power Dissipation (PD)
Dual-In-Line
Small Outline
Lead Temperature (TL)
(Soldering, 10 seconds)
−0.5 to +18 VDC
−0.5V to VDD + 0.5 VDC
−65°C to +150°C
700 mW
500 mW
260°C
Recommended Operating
Conditions (Note 2)
DC Supply Voltage (VDD)
3 to 15 VDC
Input Voltage (VIN)
0 to VDD VDC
Operating Temperature Range (TA)
−40°C to +85°C
Note 1: “Absolute Maximum Ratings” are those values beyond which the
safety of the device cannot be guaranteed, they are not meant to imply that
the devices should be operated at these limits. The tables of “Recom-
mended Operating Conditions” and “Electrical Characteristics” provide con-
ditions for actual device operation.
Note 2: VSS = 0V unless otherwise specified.
DC Electrical Characteristics (Note 2)
Symbol
Parameter
Conditions
IDD Quiescent
Device Current
VOL LOW Level
Output Voltage
VOH HIGH Level
Output Voltage
VIL LOW Level
Input Voltage
VIH HIGH Level
Input Voltage
IOL LOW Level
Output Current
(Note 3)
IOH HIGH Level
Output Current
(Note 3)
IIN Input Current,
Pin 2 or 14
VDD = 5V VIH = VDD
VDD = 10V VIL = VSS
VDD = 15V All Outputs Open
VDD = 5V |IO| < 1 µA
VDD = 10V VIH = VDD, VIL = VSS
VDD = 15V
VDD = 5V |IO| < 1 µA
VDD = 10V VIH = VDD, VIL = VSS
VDD = 15V
|IO| < 1 µA
VDD = 5V, VO = 0.5V or 4.5V
VDD = 10V, VO = 1.0V or 9.0V
VDD = 15V, VO = 1.5V or 13.5V
|IO| < 1 µA
VDD = 5V, VO = 0.5V or 4.5V
VDD = 10V, VO = 1.0V or 9.0V
VDD = 15V, VO = 1.5V or 13.5V
VDD = 5V, VO = 0.4V VIH = VDD
VDD = 10V, VO = 0.5V VIL = VSS
VD = 15V, VO = 1.5V
VDD = 5V, VO = 4.6V
VDD = 10V, VO = 9.5V VIL = VSS
VD = 15V, VO = 13.5V
VDD = 15V, VIN = 0V or 15V
IIN Input Current
Other Inputs
VDD = 15V, VIN = 0V or 15V
Note 3: IOH and IOL are tested one output at a time.
−40°C
Min Max
20
40
80
0.05
0.05
0.05
4.95
9.95
14.95
+25°C
Min Typ
0.005
0.010
0.015
0
0
0
4.95 5
9.95 10
14.95 15
Max
20
40
80
0.05
0.05
0.05
+85°C
Min Max
150
300
600
0.05
0.05
0.05
4.95
9.95
14.95
1.5 2.25 1.5
3.0 4.50 3.0
4.0 6.75 4.0
1.5
3.0
4.0
3.5
7.0
11.0
0.52
1.3
3.6
−0.52
−1.3
−3.6
±0.02
3.5
7.0
11.0
0.44
1.1
3.0
−0.44
−1.1
−3.0
2.75
5.50
8.25
0.88
2.25
8.8
−0.88
−2.25
−8.8
±10−5
±0.05
3.5
7.0
11.0
0.36
0.9
2.4
−0.36
−0.9
−2.4
±0.5
±0.3
±10−5 ±0.3
±1.0
Units
µA
µA
µA
V
V
V
V
V
V
V
V
V
V
V
V
mA
mA
mA
mA
mA
mA
µA
µA
5 www.fairchildsemi.com
5 Page 
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Package Number N16E
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
Fairchild does not assumeany responsibility for use of any circuitry described, nocircuit patent licenses are impliedandFairchildreserves theright at any timewithout noticetochange saidcircuitry andspecifications.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet CD4538BC.PDF ] | |
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