Chips K174KN1 and K174KN2. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Chips K174KN1, K174KN2. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Application of microcircuits

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K174KN1

Designed to work in the program selection unit of television receivers with electronic channel selectors as an eight-channel voltage switch.

Housing type 238.16-2

The mass of the microcircuit is not more than 1,5 g

Functional diagram

Chips K174KN1, K174KN2
DD1, DD2, DDZ - logic diagram
o - inversion
& - multiplier of the "AND" function

Pin assignment

1	Blocking input APCG
2	1 channel output
3	General conclusion
4,5,6	Output 3, 5, 7 channels
7,8,9	Entrance A1,A2,AZ
10	Supply voltage
11, 12, 13, 14	Output 8, 6, 4, 2 channels
15	Remote control input
16	APCG blocking output

Main technical characteristics under normal climatic conditions

	No more
Consumption current, mA	8
Analog output leakage current, uA:
channels 1-8	4
on conclusion 16	3
Input current, mA:
high level	0,5
low level	0,5
Residual voltage, V:
channels 1-8	0,5
on output 1 6	0,5

Maximum permissible values of operating modes

Possible change in ambient temperature from minus 10 to plus 70°C.

	no less	No more
Supply voltage	10,8	13,2
Switched voltage, V:
on pins 1-8	10,8	33
at pin 16	-	13.2
Input voltage of control inputs, V:
high level	10,8	13,2
low level	0	4,0
Switched current, mA.:
at pin 1 6	-	15
channels 1-8	-	20

Typical switching circuit in a control unit with push-button and remote control with random access

Chips K174KN1, K174KN2

Switching of the microcircuit is carried out by closing the selected output with pin 1 in the push-button control mode for at least 1 ms, or with a three-digit binary code on pins 7, 8, 9 in the remote control mode in the presence of a control voltage at pin 15. The state of the microcircuit is saved after the control switches are turned off. voltages from the indicated inputs.

Chips K174KN1, K174KN2
Residual stress versus temperature
environment at various switching currents

K174KH2

Designed to work in the program selection unit of television receivers with electronic channel selectors as a voltage switch for eight outputs, controlled by outputs and a three-digit binary code by address control inputs, as well as allowing the ring switching mode of channels by a sequence of pulses applied to its control input.

Housing type 238.16-2.

Macca microcircuits not more than 1,5 g

Functional diagram

DD1, DD2, DD3 - logic circuit (click to enlarge): o - inversion; & - multiplier of the "AND" function

Pin assignment

1	Blocking input APCG
2	Channel 1 output
3	General conclusion
4,5,6	3,5,7 channel output
7,8,9	Entrance A1, A2, AZ
10	Supply voltage
11,12, 13,14	8,0,4,2 channel output
15	Remote control input
16	APCG blocking output

Main technical characteristics under normal climatic conditions

	No more
Consumption current, mA	10
Analog leakage current
output, uA:
channels 1-8	4
on conclusion 16	3
Input current, mA:
high level	0,5
low level	0,5
Residual voltage, V:
channels 1-8	0,5
by conclusion. 16	0,5

Maximum permissible values of operating modes

Possible change in ambient temperature from minus 10 to plus 70°C.

	no less	No more
Supply voltage, V:
in a mode that allows both local and remote control	10,8	13,2
in local control only mode	9,0	13,2
Switched voltage. AT:
at pin 16	1	13,2
channels 1-8	9,0	33
Input voltage of control inputs, V:
high level	10,8	13,2
low level	0	4
Switched current, mA:
channels 1-8	-	20
at pin 16	-	15

Typical switching circuit in the control unit with push-button and remote control with random access and ring count

Chips K174KN1, K174KN2

Switching of the microcircuit is carried out by closing the selected output with pin 1 in push-button control mode for at least 1 ms, or with a three-digit binary code on pins 7,8,4 in remote control mode in the presence of a control voltage at pin 15, a sequence of single pulses on pin 15 in the ring switching mode of channels, and the capacitors on pins 7,6,9 are connected only in the last of the modes. The state of the microcircuit after switching off the control voltages of the indicated inputs is saved.

Chips K174KN1, K174KN2

Dependence of the residual voltage on the ambient temperature at different values of the switching current

The material was prepared by Dmitry Marchenko; Publication: N. Bolshakov, rf.atnn.ru

See other articles Section Application of microcircuits.

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