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BA236 데이터시트 PDF




ROHM Semiconductor에서 제조한 전자 부품 BA236은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 BA236 자료 제공

부품번호 BA236 기능
기능 (BA2xx) CR Timer
제조업체 ROHM Semiconductor
로고 ROHM Semiconductor 로고


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BA236 데이터시트, 핀배열, 회로
Standard ICs
CBAR22t5im/ BeArh2e2e5tF4U/ B.cAom235 / BA226 / BA226F / BA236The BA225, BA225F, BA235, BA226, BA226F, and BA236 are monolithic ICs having independent monostable multi-
Svibrator circuits which consume very low current (0.75mA typ.). Using external resistors and capacitors, the timing
tacontrol time can be set within a range from 0.01ms to 100ms.
a mAs the BA225, BA225F, and BA235 are triggered at the rising edge of the signal, they have no trigger input differenti-
.Dating circuit and can be used in measuring instruments, control devices, digital data systems and other equipment as
w osub-compact attachments. The BA226, BA226F, and BA236 are available as falling edge trigger types.
ww .cApplications
Delay timers
UMonostable multivibrator (ideal for VCR system con-
trollers)
t4Pulse generators
eFeatures
1) As these are edge trigger types (BA225 / BA235: ris-
eing edge trigger types, BA226 / BA236: falling edge
trigger types), there is no need for an input differenti-
hating circuit.
2) The dual type design enables delay timer configura-
Stion.
ta3) Fewer attachments are required.
4) Current dissipation is as low as 0.75mA for each cir-
cuit.
5) Uniformity in the supply current between high and
low output states simplifies the design of the power
supply section.
6) Wide operating power supply voltage range of 4.0V
to 16V.
7) The BA235 and BA236 pin assignments are sym-
metrical, allowing reverse insertion.
8) Hysteresis in the input results in a high level of noise
withstand resistance.
aBlock diagram
.D mBA225 / BA225F
w .coBA226 / BA226F
BA235 / BA236
w t4UOUT1 1
eeCR1 2
w taShTRIGGER1 3
O
CR
T
www.DaGND 4
8 VCC
O
CR
T
7 OUT2
6 CR2
5 TRIGGER2
VCC
1
OT
CR
234
GND
5
TO
CR
VCC
6789
1




BA236 pdf, 반도체, 판매, 대치품
Standard ICs
BA225 / BA225F / BA235 / BA226 / BA226F / BA236
Operation notes
(1) Usage range for voltage
The recommended voltage range is 4.0V to 16V. Use
of these ICs at 3.0V or lower voltage may cause the
same mode as the input trigger signal to be output at
around 2.6V.
(2) Input trigger
The input trigger level is 2.0V. The LOW level is 1.0V
or lower and the HIGH level is 3.0 V or higher. Trigger
signals of 10ms / V or lower should be used for both
the rising and falling edges.
(3) Time constant determining C • R
The recommended value for the timing capacitor is
1000pF or more and that for the timing resistor is from
10kto 1M.
The voltage, which is determined by comparison of dis-
charge resistance and the timing resistance in the IC,
remains on the CR pins. If timing resistance is set at
5kor less, this voltage will reach threshold level (0.4
× VCC), and operation will come to a halt. Also, when
timing resistance is set to a low value, voltage remains
on the CR pins, which shortens the time constant. If
timing resistance is set to 2Mor higher, the IC's inter-
nal comparator cannot be driven, which may bring
operation to a halt.
(4) Note that pin connections and pin arrangements on
the BA225 / BA226 (BA235F / BA226F) differ from
those on the BA235 / BA236.
Application example
Figure 8 shows an example of the circuit including
these ICs, while Figure 9 shows the basic operation
timing chart. Figure 10 shows the basic operation tim-
ing chart of the falling edge trigger type IC. When no
trigger signal is applied, the output is in the LOW state
and the timing capacitor is in the discharged state.
When a trigger signal is applied, its rising edge causes
the output to become HIGH and the timing capacitor to
be charged.
The charging time of this timing capacitor is determined
by the time constants of the external timing resistor and
the timing capacitor. When the charged voltage reach-
es 0.4 × VCC, the flip-flop in the IC is reset and the out-
put state changes from HIGH to LOW. At the same
time, the timing capacitor is discharged to be ready for
the next operation.
VCC
0.02µF
OUT2
R 100k
C
87 6 5
VCC
CR
0T
M. M2
M. M1
0T
CR
BA225
BA226
BA225F
BA226F
GND
1
OUT1
2
100k
R
VCC
3
0.1µF
C
4
Fig. 8
VCC = 5V
4

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