ST HCF4047B User Manual
HCF4047B
LOW POWER MONOSTABLE/ASTA BLE MULTIVIBRATOR
■ LOW POWER CONSUMPTION : SPECIAL
CMOS OSCILLATOR CONFIGURATION
■ MONOSTABLE (one - shot) OR ASTABLE
(free-running) OPERATION
■ TRUE AND COMPLEMENTED BUFFERED
OUTPUTS
■ ONLY ONE EXTERNAL R AND C REQUIRED
■ BUFFERED INPUTS
■ QUIESCENT CURRENT SPECIFIED UP TO
20V
■ STANDARD IZED, SYMMETRIC AL OUTPUT
CHARACTERISTIC S
■ 5V, 10V AND 15V PARAMETRIC RAT INGS
■ INPUT LEAKAGE CURRENT
I
= 100nA (MAX) AT VDD = 18V TA = 25°C
I
■ 100% TESTED FOR QUIESCENT CURRENT
■ MEETS ALL REQUIREMENTS OF JEDEC
JESD13B " STANDARD SPECIF ICATIONS
FOR DESCRIPTI ON OF B SERI ES CMOS
DEVICES"
DESCRIPTION
The HCF4047B is a m onolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
The HCF4047B consist of a gatable astable
multivibrator with logic techniques i nc orporated to
DIP SOP
ORDER CODES
PACKAGE TUBE T & R
DIP HCF4047BEY
SOP HCF4047BM1 HCF4047M013TR
permit positive or negative edge-triggered
monostable multivibrator action with retriggering
and external counting options. Inputs include
+TRIGGER -TRIGGER, ASTABLE, ASTABLE
RETRIGGER, and EXTERNAL RESET. Buffe red
outputs are Q, Q
and OSCILLATOR. In all modes
of operation, an external capacitor must be
connected between C-Timing and RC-Common
terminals, and an external resistor must be
connected between the R-Timing and
RC-Common terminals.
For operating modes see functional terminal
connections and application notes.
,
PIN CONNECTION
1/12September 2001
HCF4047B
INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
1 C External Capacitor
2 R External Resistor
3
4 ASTABLE
5 ASTABLE True Astable Pulse
6 -TRIGGER Negative Trigger Pulse
8 +TRIGGER Positive Trigger Pulse
9 EXT. RESET External Reset
12
13 OSC. OUT Oscillator Output
10,11 Q, Q
7
14
RC COM-
MON
RETRIG-
GER
V
SS
V
DD
BLOCK DIAGRAM
External Connection to (1)
and (2)
Complement Astable
Pulse
Retrigger Mode Pulse
Q Outputs
Negative Supply Voltage
Positive Supply Voltage
2/12
FUNCTIONAL TERMINAL CONNECTIONS
HCF4047B
FUNCTION*
TERMINAL CONNECTIONS
to V
DD
to V
SS
Input Pulse
to
OUTPUT
PULSE
FROM
OUTPUT PERIOD OR
Astable Multivibrator
Free Running 4, 5, 6, 14 7, 8, 9, 12 - 10, 11, 13 t
True Gating 4, 6, 14 7, 8, 9, 12 5 10, 11, 13
Complement Gating 6, 14 5, 7, 8, 9, 12 4 10, 11, 13 t
Monostable Multivibrator
Positive - Edge Trigger 4, 14 5, 6, 7, 9, 12 8 10, 11
Negative - Edge Trigger 4, 8, 14 5, 7, 9, 12 6 10, 11
Retriggerable 4, 14 5, 6, 7, 9 8, 12 10, 11 t
External Countdown** 14 5, 6, 7, 8, 9,
- 10, 11
12
* In all case s external c apacitor and resistor between pins, 1, 2 and 3 (see logic diagrams).
** Input pulse to Reset of External Counting Chip.
External Counting Chip Output to pin 4.
LOGIC DIAGRAM
PULSE WIDTH
(10,11) = 4.40RC
A
(13) = 2.20RC
A
(10,11) = 2.48RC
M
3/12
HCF4047B
DETAIL FOR FLIP-FLOPS FF1 AND FF3 (a) AND FOR FLIP-FLOPS FF2 AND FF4 (b)
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
P
Supply Voltage
DD
DC Input Voltage -0.5 to VDD + 0.5
I
I
DC Input Current
I
Power Dissipation per Package 200 mW
D
-0.5 to +22 V
± 10 mA
V
Power Dissipation per Output Transistor 100 mW
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage value s are referred to V
Operating Temperature
op
Storage Temperature
stg
pin voltage.
SS
-55 to +125 °C
-65 to +150 °C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
T
Supply Voltage
DD
Input Voltage 0 to V
I
Operating Temperature
op
3 to 20 V
DD
-55 to 125 °C
V
4/12
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