파트넘버.co.kr 74HC4538 데이터시트 PDF


74HC4538 반도체 회로 부품 판매점

Dual retriggerable precision monostable multivibrator



ON Semiconductor 로고
ON Semiconductor
74HC4538 데이터시트, 핀배열, 회로
MC74HC4538A
Dual Precision
Monostable Multivibrator
(Retriggerable, Resettable)
The MC74HC4538A is identical in pinout to the MC14538B. The
device inputs are compatible with standard CMOS outputs; with
pullup resistors, they are compatible with LSTTL outputs.
This dual monostable multivibrator may be triggered by either the
positive or the negative edge of an input pulse, and produces a
precision output pulse over a wide range of pulse widths. Because the
device has conditioned trigger inputs, there are no trigger–input rise
and fall time restrictions. The output pulse width is determined by the
external timing components, Rx and Cx. The device has a reset
function which forces the Q output low and the Q output high,
regardless of the state of the output pulse circuitry.
Unlimited Rise and Fall Times Allowed on the Trigger Inputs
Output Pulse is Independent of the Trigger Pulse Width
± 10% Guaranteed Pulse Width Variation from Part to Part (Using
the Same Test Jig)
Output Drive Capability: 10 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS and TTL
Operating Voltage Range: 3.0 to 6.0 V
Low Input Current: 1.0 µA
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 145 FETs or 36 Equivalent Gates
TRIGGER A1 4
INPUTS B1 5
LOGIC DIAGRAM
CX1 RX1
VCC
12
6 Q1
7 Q1
RESET 1 3
TRIGGER A2 12
INPUTS B2 11
CX2 RX2
VCC
15 14
10 Q2
9 Q2
PIN 16 = VCC
PIN 8 = GND
RESET 2 13
RX AND CX ARE EXTERNAL COMPONENTS
PIN 1 AND PIN 15 MUST BE HARD WIRED TO GND
© Semiconductor Components Industries, LLC, 2000
March, 2000 – Rev. 7
1
http://onsemi.com
16
1
16
1
MARKING
DIAGRAMS
16
PDIP–16
N SUFFIX
CASE 648
MC74HC4538AN
AWLYYWW
1
16
SO–16
D SUFFIX
CASE 751B
HC4538A
AWLYWW
1
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
PIN ASSIGNMENT
GND
CX1/RX1
RESET 1
A1
B1
Q1
Q1
GND
1
2
3
4
5
6
7
8
16 VCC
15 GND
14 CX2/RX2
13 RESET 2
12 A2
11 B2
10 Q2
9 Q2
FUNCTION TABLE
Inputs
Reset A
B
Outputs
QQ
H
HL
H
HX
HH
L Not Triggered
X Not Triggered
H L,H,
H Not Triggered
H L L,H, Not Triggered
LX
X
X LH
X Not Triggered
ORDERING INFORMATION
Device
Package Shipping
MC74HC4538AN
PDIP–16 2000 / Box
MC74HC4538AD
SOIC–16 48 / Rail
MC74HC4538ADR2
SOIC–16 2500 / Reel
Publication Order Number:
MC74HC4538A/D


74HC4538 데이터시트, 핀배열, 회로
MC74HC4538A
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎMAXIMUM RATINGS*
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎSymbol
Parameter
Value
Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎVCC
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎVin
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎVout
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎIin
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎIout
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎICC
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎPD
DC Supply Voltage (Referenced to GND)
– 0.5 to + 7.0
V
DC Input Voltage (Referenced to GND)
– 1.5 to VCC + 1.5
DC Output Voltage (Referenced to GND)
– 0.5 to VCC + 0.5
DC Input Current, per Pin
A, B, Reset
Cx, Rx
± 20
± 30
DC Output Current, per Pin
± 25
V
mA
mA
DC Supply Current, VCC and GND Pins
Power Dissipation in Still Air,
Plastic DIP†
SOIC Package†
± 50
750
500
mA
mW
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎTstg Storage Temperature
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎTL Lead Temperature, 1 mm from Case for 10 Seconds
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ(Plastic DIP or SOIC Package)
– 65 to + 150
260
_C
_C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ*Maximum Ratings are those values beyond which damage to the device may occur.
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this high–impedance cir-
cuit. For proper operation, Vin and
v vVout should be constrained to the
range GND (Vin or Vout) VCC.
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or VCC).
Unused outputs must be left open.
Functional operation should be restricted to the Recommended Operating Conditions.
†Derating — Plastic DIP: – 10 mW/_C from 65_ to 125_C
SOIC Package: – 7 mW/_C from 65_ to 125_C
For high frequency or heavy load considerations, see Chapter 2 of the ON Semiconductor High–Speed CMOS Data Book (DL129/D).
RECOMMENDED OPERATING CONDITIONS
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎSymbol
Parameter
Min Max Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎVCC
DC Supply Voltage (Referenced to GND)
3.0**
6.0 V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎVin, Vout
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎTA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎtr, tf
DC Input Voltage, Output Voltage (Referenced to GND)
Operating Temperature, All Package Types
Input Rise and Fall Time
(Figure 7)
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
0
– 55
0
0
0
VCC
+ 125
1000
500
400
V
_C
ns
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎA or B (Figure 5)
— No Limit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎRx ExternalTimingResistor
VCC < 4.5 V
VCC 4.5 V
1.0
2.0
* k
*
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎCx External TimingCapacitor
0 * µF
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ*The maximum allowable values of Rx and Cx are a function of the leakage of capacitor Cx, the leakage of the HC4538A, and leakage due
to board layout and surface resistance. For most applications, Cx/Rx should be limited to a maximum value of 10 µF/1.0 M. Values of Cx
> 1.0 µF may cause a problem during power down (see Power Down Considerations). Susceptibility to externally induced noise signals may
occur for Rx > 1.0 M.
** The HC4538A will function at 2.0 V but for optimum pulse width stability, VCC should be above 3.0 V.
NOTE: Information on typical parametric values can be found in Chapter 2 of the ON Semiconductor High–Speed CMOS Data Book
(DL129/D).
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