M74HC4538B1R STMicroelectronics, M74HC4538B1R Datasheet

IC MULTIVIBRATOR DUAL MONO 16DIP

M74HC4538B1R

Manufacturer Part Number
M74HC4538B1R
Description
IC MULTIVIBRATOR DUAL MONO 16DIP
Manufacturer
STMicroelectronics
Series
74HCr
Datasheet

Specifications of M74HC4538B1R

Logic Type
Monostable
Independent Circuits
2
Schmitt Trigger Input
No
Propagation Delay
25ns
Current - Output High, Low
5.2mA, 5.2mA
Voltage - Supply
2 V ~ 6 V
Operating Temperature
-55°C ~ 125°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Elements Per Chip
2
Logic Family
HC
Input Bias Current (max)
0.004 mA
Propagation Delay Time
250 ns, 50 ns, 43 ns
High Level Output Current
- 5.2 mA
Low Level Output Current
5.2 mA
Supply Voltage (max)
6 V
Supply Voltage (min)
2 V
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 55 C
Mounting Style
Through Hole
Operating Supply Voltage
2.5 V, 3.3 V, 5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-1864-5

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M74HC4538B1R
Quantity:
269
Part Number:
M74HC4538B1R
Manufacturer:
ST
0
Features
Table 1.
May 2008
High speed:
t
Low power dissipation
standby 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 4538
PD
CC
CC
PLH
WOUT
OH
NIH
CC
= 25 ns (typ.) at V
= 4 μA (max.) at T
= 200 μA (max.) at V
| = I
M74HC4538RM13TR
(opr) = 2 to 6 V
= V
M74HC4538B1R
M74HC4538TTR
= 120 ns ~ 60 s over at V
t
OL
PHL
NIL
Order code
Device summary
= 4 mA (min.)
= 28
%
V
CC
CC
A
= 25 °C
(min.)
CC
= 6 V
= 6 V
CC
Dual retriggerable monostable multivibrator
= 4.5 V
TSSOP16
Package
DIP-16
SO-16
Rev 2
Description
The M74HC4538 is a high speed CMOS monostable
multivibrator fabricated with silicon gate C
technology.
Each multivibrator features both a negative A, and a
positive B, edge triggered input, either of which can be
used as an inhibit input. Also included is a clear input
that when taken low resets the one shot. The
monostable multivibrators are retriggerable. That is,
they may be triggered repeatedly while their outputs are
generating a pulse and the pulse will be extended.
Pulse width stability over a wide range of temperature
and supply is achieved using linear CMOS techniques.
The output pulse equation is simply: PW = 0.7 (R)(C)
where PW is in seconds, R in Omhs and C is in Farads.
All the inputs are equipped with protection circuits
against static discharge and transient excess voltage.
DIP-16
TSSOP16
M74HC4538
Tape and reel
Tape and reel
Packaging
Tube
SO-16
2
MOS
www.st.com
1/18
18

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M74HC4538B1R Summary of contents

Page 1

... V WOUT ■ Pin and function compatible with 74 series 4538 Table 1. Device summary Order code M74HC4538B1R M74HC4538RM13TR M74HC4538TTR May 2008 Dual retriggerable monostable multivibrator = 6 V Description The M74HC4538 is a high speed CMOS monostable multivibrator fabricated with silicon gate C = 4.5 V technology ...

Page 2

Pin connection and IEC logic symbols 1 Pin connection and IEC logic symbols Figure 1. Pin connections and IEC logic symbols Inputs Outputs Table 2. Pin description Pin number ...

Page 3

M74HC4538 Figure 2. Input and output equivalent circuit Table 3. Truth table Inputs Figure 3. System diagram Input GND GND ...

Page 4

Pin connection and IEC logic symbols Figure 4. Timing chart Figure 5. Block diagram 1. Cx, Rx, Dx are external components clamping diode. The external capacitor is charged to V turned off Cx is discharged mainly ...

Page 5

M74HC4538 2 Functional description Standby state The external capacitor Cx, is fully charged to V triggering, transistor Qp and Qn (connected to the Rx/Cx node) are both turned-off. The two comparators that control the timing and the two reference voltage ...

Page 6

... These are stress ratings only, and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 4. ...

Page 7

M74HC4538 4 Electrical characteristics Table 6. DC specifications Symbol Parameter V High level input V IH voltage Low level input V IL voltage High level output V OH voltage Low level output V OL voltage Input leakage I I current ...

Page 8

Electrical characteristics Table 7. AC electrical characteristics (C Symbol Parameter V Output transition t t TLH THL time Propagation t t delay time PLH PHL ( Propagation t t delay time PLH PHL ( ...

Page 9

M74HC4538 Table 7. AC electrical characteristics (C Symbol Parameter V Minimum t rr retrigger time Table 8. Capacitive characteristics Symbol Parameter C Input capacitance IN Power dissipation C PD (1) capacitance defined as the value of the ...

Page 10

Electrical characteristics Figure 6. Test circuit Figure 7. Waveform: propagation delay times ( MHz; 50% duty cycle) 10/18 M74HC4538 ...

Page 11

M74HC4538 5 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the ...

Page 12

Package mechanical data DIM 12/18 Plastic DIP-16 (0.25) MECHANICAL DATA mm. MIN. TYP MAX. 0.51 0.77 1.65 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 M74HC4538 ...

Page 13

M74HC4538 DIM SO-16 MECHANICAL DATA mm. MIN. TYP MAX. 1.75 0.1 0.25 1.64 0.35 0.46 0.19 0.25 0.5 45° (typ.) 9.8 10 5.8 6.2 ...

Page 14

Package mechanical data DIM PIN 1 IDENTIFICATION 14/18 TSSOP16 MECHANICAL DATA mm. MIN. TYP MAX. 1.2 0.05 0.15 0.8 1 1.05 0.19 0.30 0.09 0.20 4.9 5 5.1 ...

Page 15

M74HC4538 DIM Tape & Reel SO-16 MECHANICAL DATA mm. MIN. TYP MAX. 330 12.8 13.2 20.2 60 22.4 6.45 6.65 10.3 10.5 2.1 2.3 3.9 4.1 7.9 8.1 Package mechanical ...

Page 16

Package mechanical data DIM 16/18 Tape & Reel TSSOP16 MECHANICAL DATA mm. MIN. TYP MAX. 330 12.8 13.2 20.2 60 22.4 6.7 6.9 5.3 5.5 1.6 1.8 3.9 4.1 7.9 ...

Page 17

M74HC4538 6 Revision history Table 9. Document revision history Date 01-Jul-2001 26-May-2008 Revision 1 Initial release. Document converted and restructured to new template. Removed: M74HC4538M1R order code. 2 Minor text changes. Added: SO-16 and TSSOP16 tape and reel specifications. Revision ...

Page 18

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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