MC14541B ON Semiconductor, MC14541B Datasheet

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MC14541B

Manufacturer Part Number
MC14541B
Description
Programmable Timer
Manufacturer
ON Semiconductor
Datasheet
MC14541B
Programmable Timer
counter, an integrated oscillator for use with an external capacitor and
two resistors, an automatic power–on reset circuit, and output control
logic.
reset is enabled and initializes the counter, within the specified V
range. With the power already on, an external reset pulse can be
applied. Upon release of the initial reset command, the oscillator will
oscillate with a frequency determined by the external RC network. The
16–stage counter divides the oscillator frequency (f
stage frequency being f
2. Maximum Ratings are those values beyond which damage to the device
3. Temperature Derating:
MAXIMUM RATINGS
March, 2000 – Rev. 6
Symbol
V
The MC14541B programmable timer consists of a 16–stage binary
Timing is initialized by turning on power, whereupon the power–on
range and 20% supply and 3% over processing at < 10 kHz)
external clock to Pin 3)
Operation
Provide No Active Power Dissipation
Rise and Fall Times
Supply Voltage Range =
Supply Voltage Range
Supply Voltage Range =
Available Outputs 2
Increments on Positive Edge Clock Transitions
Built–in Low Power RC Oscillator ( 2% accuracy over temperature
Oscillator May Be Bypassed if External Clock Is Available (Apply
External Master Reset Totally Independent of Automatic Reset
Operates as 2
Q/Q Select Provides Output Logic Level Flexibility
Reset (auto or master) Disables Oscillator During Resetting to
Clock Conditioning Circuit Permits Operation with Very Slow Clock
Automatic Reset Initializes All Counters On Power Up
Supply Voltage Range = 3.0 Vdc to 18 Vdc with Auto Reset
in
Semiconductor Components Industries, LLC, 2000
may occur.
Plastic “P and D/DW” Packages: – 7.0 mW/ _ C From 65 _ C To 125 _ C
V
T
I
P
, V
T
T
I
out
stg
DD
in
D
A
L
out
DC Supply Voltage Range
Input or Output Voltage Range
Input Current (DC or Transient)
Output Current (DC or Transient)
Power Dissipation,
Ambient Temperature Range
Storage Temperature Range
Lead Temperature
(DC or Transient)
per Package (Note 3.)
(8–Second Soldering)
n
Frequency Divider or Single Transition Timer
Parameter
8
(Voltages Referenced to V
osc
, 2
= 8.5 Vdc to 18 Vdc with Auto Reset
/2
10
Disabled (Pin 5 = V
Enabled (Pin 5 = V
n
, 2
.
13
or 2
16
– 0.5 to V
– 0.5 to +18.0
SS
– 55 to +125
– 65 to +150
SS
10 (per Pin)
45 (per Pin)
DD
) (Note 2.)
)
Value
500
260
)
DD
osc
+ 0.5
) with the n
1
Unit
mW
mA
mA
V
V
C
C
C
DD
th
against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid ap-
plications of any voltage higher than maximum rated
voltages to this high–impedance circuit. For proper
operation, V
range V
logic voltage level (e.g., either V
puts must be left open.
1. For ordering information on the EIAJ version of
MC14541BCP
MC14541BD
MC14541BDR2
MC14541BDT
MC14541BDTR2
MC14541BF
MC14541BFEL
This device contains protection circuitry to guard
Unused inputs must always be tied to an appropriate
the SOIC packages, please contact your local
ON Semiconductor representative.
Device
SS
ORDERING INFORMATION
v
A
WL or L = Wafer Lot
YY or Y = Year
WW or W = Work Week
in
(V
and V
http://onsemi.com
in
or V
CASE 751A
CASE 948G
SOEIAJ–14
DT SUFFIX
TSSOP–14
CASE 646
CASE 965
P SUFFIX
D SUFFIX
F SUFFIX
out
PDIP–14
SOIC–14
SOEIAJ–14
SOEIAJ–14
TSSOP–14
TSSOP–14 2500/Tape & Reel
= Assembly Location
out
Package
SOIC–14
SOIC–14
PDIP–14
should be constrained to the
)
v
Publication Order Number:
V
DD
SS
14
14
14
.
or V
1
1
1
2500/Tape & Reel
14
DIAGRAMS
MC14541BCP
DD
MARKING
See Note 1.
See Note 1.
1
AWLYYWW
MC14541B
AWLYWW
AWLYWW
Shipping
2000/Box
MC14541B/D
14541B
). Unused out-
55/Rail
96/Rail
ALYW
541B
14

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MC14541B Summary of contents

Page 1

... MC14541B Programmable Timer The MC14541B programmable timer consists of a 16–stage binary counter, an integrated oscillator for use with an external capacitor and two resistors, an automatic power–on reset circuit, and output control logic. Timing is initialized by turning on power, whereupon the power–on reset is enabled and initializes the counter, within the specified V range ...

Page 2

... The formulas given are for the typical characteristics only When using the on chip oscillator the total supply current (in Adc) becomes Volts DC, and f in kHz. (see Fig. 3) Dissipation during power–on with automatic reset enabled is typically MC14541B PIN ASSIGNMENT ...

Page 3

... PULSE R S GENERATOR AR Q/Q SELECT MODE AND C OUTPUTS ARE LEFT OPEN 90% 50% 10% 50% DUTY CYCLE Figure 1. Power Dissipation Test Circuit and Waveform MC14541B = pF Symbol TLH t 5.0 THL PLH t 5.0 PHL PHL t 5 ...

Page 4

... Count Counter Stages 65536 3 INTERNAL RESET R S Figure 3. Oscillator Circuit Using RC Configuration MC14541B MUX 8–STAGE COUNTER RESET 10 MODE Pin n 2 Auto Reset, 5 Auto Reset 8192 Operating 1024 Master Reset, 6 ...

Page 5

... When A is “1” selected for both states of B. However INPUT MC14541B 100 5 FUNCTION 2 1 120 0.5 0 0.1 75 ...

Page 6

... K D SEATING 14 PL PLANE 0.25 (0.010 MC14541B PACKAGE DIMENSIONS P SUFFIX PLASTIC DIP PACKAGE CASE 646–06 ISSUE M NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN B 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. ...

Page 7

... L PIN 1 IDENT 0.15 (0.006 –V– C 0.10 (0.004) –T– SEATING G D PLANE MC14541B PACKAGE DIMENSIONS DT SUFFIX PLASTIC TSSOP PACKAGE CASE 948G–01 ISSUE 0.25 (0.010 –U– F DETAIL Ç Ç Ç ...

Page 8

... A 0.05 0.20 0.002 0.008 1 b 0.35 0.50 0.014 0.020 c 0.18 0.27 0.007 0.011 D 9.90 10.50 0.390 0.413 E 5.10 5.45 0.201 0.215 e 1.27 BSC 0.050 BSC H 7.40 8.20 0.291 0.323 E 0.50 0.50 0.85 0.020 0.033 L 1.10 1.50 0.043 0.059 0.70 0.90 0.028 0.035 1 Z ––– 1.42 ––– 0.056 MC14541B/D ...

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