HEF4047BT NXP Semiconductors, HEF4047BT Datasheet - Page 3

• Manufacturer Part Number: HEF4047BT
• Description: IC, 4000 LOCMOS, SMD, 4047, SOIC14
• Manufacturer: NXP Semiconductors

Specifications of HEF4047BT

• Multivibrator Type: Monostable / Astable
• Output Current: 2.4mA
• Logic Case Style: SOIC
• No. Of Pins: 14
• Supply Voltage Range: 4.5V To 15.5V
• Operating Temperature Range: -40°C
• Propagation Delay: 50ns
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Philips Semiconductors
Astable operation is enabled by a HIGH level on the
ASTABLE input. The period of the square wave at O and
O outputs is a function of the external components
employed. ‘True’ input pulses on the ASTABLE or
‘complement’ pulses on the ASTABLE input, allow the
circuit to be used as a gatable multivibrator. The
OSCILLATOR OUTPUT period will be half of the O output
in the astable mode. However, a 50% duty factor is not
guaranteed at this output.
In the monostable mode, positive edge-triggering is
accomplished by applying a leading-edge pulse to the
+ TRIGGER input and a LOW level to the
input. For negative edge-triggering, a trailing-edge pulse is
applied to the
+ TRIGGER. Input pulses may be of any duration relative
to the output pulse. The multivibrator can be retriggered
(on the leading-edge only) by applying a common pulse to
both the RETRIGGER and + TRIGGER inputs. In this
mode the output pulse remains HIGH as long as the input
pulse period is shorter than the period determined by the
RC components.
January 1995
Monostable/astable multivibrator
TRIGGER and a HIGH level to the
Fig.2 Pinning diagram.
TRIGGER
3
An external count down option can be implemented by
coupling O to an external ‘N’ counter and resetting the
counter with the trigger pulse. The counter output pulse is
fed back to the ASTABLE input and has a duration equal
to N times the period of the multivibrator. A HIGH level on
the MR input assures no output pulse during an ON-power
condition. This input can also be activated to terminate the
output pulse at any time. In the monostable mode, a HIGH
level or power-ON reset pulse must be applied to MR,
whenever V
HEF4047BP(N):
HEF4047BD(F):
HEF4047BT(D):
( ): Package Designator North America
DD
is applied.
14-lead DIL; plastic
14-lead DIL; ceramic (cerdip)
14-lead SO; plastic
(SOT27-1)
(SOT73)
(SOT108-1)
Product specification
HEF4047B
MSI