4093BP 데이터 시트보기 (PDF) - NXP Semiconductors.

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4093BP

Quadruple 2-input NAND Schmitt trigger

NXP Semiconductors. 

NXP Semiconductors

10

VI

(V)

5

HEF4093B

Quad 2-input NAND Schmitt trigger

001aag112

VT+

VT−

0

2.5

5

7.5

10

12.5

Tamb = 25 C.

Fig 9. Typical switching levels as a function of supply voltage

15

17.5

VDD (V)

14. Application information

Some examples of applications for the HEF4093B are:

• Wave and pulse shapers

• Astable multivibrators

• Monostable multivibrators

VDD

VDD

14

1

3

2

7

001aag113

Fig 10. Astable multivibrator

Cp

R

VDD

VDD

14

1

3

2

C

7

001aag114

Fig 11. Schmitt trigger driven via a

high-impedance input

HEF4093B

Product data sheet

If a Schmitt trigger is driven via a high-impedance (R > 1 k), then it is necessary to

incorporate a capacitor C with a value of --C---- > -V---D----D-----–----V----S---S ; otherwise oscillation can occur

CP

VH

on the edges of a pulse.

Cp is the external parasitic capacitance between inputs and output; the value depends on

the circuit board layout.

Remark: The two inputs may be connected together, but this will result in a larger

through-current at the moment of switching.

All information provided in this document is subject to legal disclaimers.

Rev. 8 — 21 November 2011

© NXP B.V. 2011. All rights reserved.

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