HEF4543B_09 datasheet(10/16 Pages) NXP

10 / 16 page

HEF4543B_5

Product data sheet

Rev. 05 — 27 October 2009

10 of 16

NXP Semiconductors

HEF4543B

BCD to 7-segment latch/decoder/driver

13. Application information

Some examples of applications for the HEF4543B are:

• Driving LCD displays

• Driving LED displays

• Driving ﬂuorescent displays

• Driving incandescent displays

• Driving gas discharge displays

a. Input waveforms

b. Test circuit

Test data is given in Table 9.

Deﬁnitions for test circuit:

RL = Load resistance;

CL = Load capacitance including jig and probe capacitance;

RT = Termination resistance should be equal to output impedance Zo of the pulse generator.

Fig 7.

Test circuit for switching times

10 %

90 %

0 V

negative

pulse

positive

pulse

0 V

90 %

10 %

001aaj781

VDD

001aag182

DUT

Table 9.

Test data

Supply voltage

Input

Load

tr, tf

5 V to 15 V

VDD

0.5VI

≤ 20 ns

50 pF

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