SGS Thomson Microelectronics HCF4541B Datasheet
16 STAGEBINARI COUNTER
LOWSYMMETRICALOUTPUT RESISTANCE,
TYPICALLY 100 OHM ATVDD=15V
OSCILLATOR FREQUENCY RANGE : DC TO
100kHz
AUTOOR MASTER RESET DISABLES OSCILLATORDURINGRESET TOREDUCE POWER
DISSIPATION
OPERATESWITH VERY SLOW CLOCK RISE
AND FALL TIMES
BUILT-INLOW-POWER RC OSCILLATOR
EXTERNAL CLOCK (applied to pin 3) CAN BE
USEDINSTEAD OF OSCILLATOR
OPERATESAS 2NFREQUENCY DIVIDER OR
AS A SINGLE-TRANSITION TIMER
Q/Q SELECT PROVIDES OUTPUT LOGIC
LEVELFLEXIBILITY
CAPABLEOF DRIVINGSIXLOW POWERTTL
LOADS, THREE LOW-POWER SCHOTTKY
LOADS, PR SIX HTL LOADS OVER THE
RATEDTEMPERATURE RANGE
SYMMETRICAL OUTPUT CHARACTERISTICS
100% TESTED FOR QUIESCENT CURRENT
AT 20V
5-10-15VPARAMETRICRATINGS
MEETSALLREQUIREMENTSOFJEDECTENTATIVESTANDARD N13A, ”STANDARDSPECIFICATIONS FOR DESCRIPTION OF ’ B ’
SERIESCMOS DEVICES”
HCC4 54 1B
HCF4541B
PROGRAMMABLE TIMER
EY
(Plastic Package)
M1
(Micro Package)
ORDER CODE S :
HCC 4541 BF HCF4541 BM 1
HCF4541 BE Y HCF4541 BC1
PIN CO NNECTION (top vie w)
(Ceramic Frit Seal Package)
(Plastic Chip Carrier)
F
C1
DESCRI PTION
TheHCC/HCF4541B Programmable Timeriscomposed of a 16-stage binary counter, an oscillator
controlled by2 externalresistorsand a capacitor,an
output control logic and an automatic power-on
reset circuit. The counter varies on positive-edge
clocktransation and it can be cleared by the MASTER RESETinput.The outputfrom thistimer is the
Q or Q output from the 8th, 13th, or 16th counter
stage.Thechoice ofthestagedepends on thetimeselectinputsA or B (seefrequency selection table).
The output isavailable inone ofthe two modes that
can be selected via the MODE input, pin 10 (see
truth table). The output turns out as a continuous
squarewave,with afrequencyequaltotheoscillator
frequency divided by 2N. When this MODE input is
November1996
1/11
HCC/HCF4541B
a logic” 1 ”, whenit is a logic ” 0 ” andafter a MASTER RESET is started, and Q output has been selected, the output goes up to a high stateafter 2
N-1
counts.It remainsin thatstate till anotherMASTER
RESETpulse is apply or the mode inputis a logic ”
1 ”. Theprocess starts bysettingtheAUTO RESET
input(pin 5) to logic ” 0 ” and switching poweron. If
pin 5 is setto logic ”1 ”, the AUTORESETcircuitis
not enabled and counting cannot start till a positive
MASTERRESETpulse isapplied, returningtoalow
level. The AUTO RESET consumes a remarkable
RC OscillatorCircuit.
amount of power and should not be used if lowpoweroperation is wanted.
The frequency of the oscillator depends on the RC
network. Itcanbe calculated usingthefollowing formula:
f =
1
2.3 RTCC
TC
wheref is between 1 kHz and 100 kHz
and RS ≥ 10 kΩ and ≈ 2R
TC
FUNCTIONAL DIAGRAM
2/11
HCC/HCF4541B
ABSOLU TE M AXIMU M R AT INGS
Symbol Parameter Value Unit
* Supply Voltage: HCC Types
V
DD
HCF Types
Input Voltage – 0.5to VDD+ 0.5 V
V
I
I
DC Input Current (anyone input) ± 10 mA
I
Total Power Dissipation (perpackage)
P
tot
Dissipation per Output Transistor
for T
= FullPackage-temperature range
op
T
Operating Temperature : HCC Types
op
HCF Types
T
Storage Temperature – 65to + 150 °C
stg
Stresses above those listed under ” Absolute Maximum Ratings ” may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
* All voltages are with respect to VSS(GND).
RECO MM ENDED OPERAT IN G CO NDITI ONS
Symbol Paramet er Value Unit
Supply Voltage : HCC Types
V
DD
InputVoltage 0 to V
V
I
Operating Temperature : HCC Types
T
op
HCF Types
HCF Types
– 0.5to + 20
– 0.5to + 18
200
100
– 55to + 125
–40to+85
3to 18
3to 15
DD
– 55to 125
–40to85
V
V
mW
mW
°C
°C
V
V
V
°C
°C
LOGI C DI AGRAM
3/11
HCC/HCF4541B
STATIC ELECTRICAL
Test Conditions Value
I
Symbol Parameter
Quiescent
I
L
Current
HCC
Types
V
(V)
V
I
(V)
0/5 5 5 0.04 5 150
0/10 10 10 0.04 10 300
0/15 15 20 0.04 20 600
O
(uA
)
V
(V)
DD
O
0/20 20 100 0.08 100 3000
0/5 5 5 0.04 5 150
HCF
Types
0/10 10 10 0.04 10 300
0/15 15 20 0.04 20 600
V
OH
OutputHigh
Voltage
0/5 < 1 5 4.95 4.95 4.95
0/10 < 1 10 9.95 9.95 9.95
0/15 < 1 15 14.95 14.95 14.95
V
OL
OutputLow
Voltage
5/0 < 1 5 0.05 0.05 0.05
10/0 < 1 10 0.05 0.05 0.05
15/0 < 1 15 0.05 0.05 0.05
V
IH
InputHigh
Voltage
0.5/4.5 < 1 5 3.5 3.5 3.5
1/9 < 1 10 7 7 7
1.5/13.5 < 1 15 11 11 11
V
IL
InputLow
Voltage
4.5/0.5 < 1 5 1.5 1.5 1.5
9/1 < 1 10 3 3 3
13.5/1.5 < 1 15 4 4 4
Output
I
OH
Drive
Current
HCC
Types
0/5 4.6 5 – 1.9 – 1.55 – 3.1 – 1.08
0/5 2.5 5 – 6.2 – 5 – 10 – 3
0/10 9.5 10 – 5.0 – 4 – 8 – 2.8
0/15 13.5 15 – 12.6 – 10 – 20 – 7.2
0/5 4.6 5 – 1.85 – 1.55 – 3.1 – 1.26
0/5 2.5 5 – 6.0 – 5 – 10 – 4.1
HCF
Types
0/10 9.5 10 – 4.8 – 4 – 8 – 3.3
0/15 13.5 15 – 12 – 10 – 20 – 8.4
Output
I
OL
Sink
Current
HCC
Types
0/5 0.4 5 1.9 1.55 3.1 1.08
0/10 0.5 10 5.0 4 8 2.8
0/15 1.5 15 12.6 10 20 7.2
0/5 0.4 5 1.85 1.55 3.1 1.26
HCF
Types
0/10 0.5 10 4.8 4 8 3.3
0/15 1.5 15 12 10 20 8.4
Input
I
IH,IIL
Leakage
0/18 Any Input 18 ± 0.1
Current
InputCapacitance Any Input 5 7.5 pF
C
I
*T
= - 55C for HCC device : - 40C for HCF device.
Low
*T
= + 125C for HCC device : + 85C for HCF device.
High
The Noise Margin for both ” 1 ” and ” 0 ” level is : 1V min. with VDD= 5V 2V min. with VDD= 10V 2.5V min. with VDD=15V
T
Low
25°CT
High
Min. Max. Min. Typ. Max. Min. Max.
–
± 0.1
± 0.1 ± 1 µA
5
Unit
µA
V
V
V
V
mA
mA
4/11
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