MC14544B 데이터 시트보기 (PDF) - Motorola => Freescale

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MC14544B

BCD-to-Seven Segment Latch/Decoder/Driver for Liquid Crystals

Motorola => Freescale 

0

POHmax = 70 mWdc

VDD = 5.0 Vdc

– 6.0

– 12

VDD = 10 Vdc

– 18

VDD = 15 Vdc

VSS = 0 Vdc

– 24

– 16

– 12

– 8.0

– 4.0

0

(VOH – VDD), SOURCE DEVICE VOLTAGE (Vdc)

Figure 1. Typical Output Source

Characteristics

Inputs BI and Ph low, and Inputs D and LD high.

f in respect to a system clock.

All outputs connected to respective CL loads.

20 ns

A, B, AND C

10%

20 ns

90% 50%

1

VDD

VSS

2f

50% DUTY CYCLE

VOH

ANY OUTPUT

VOL

Figure 3. Dynamic Power Dissipation

Signal Waveforms

24

VDD = 15 Vdc

18

12

VDD = 10 Vdc

6.0

0

0

VDD = 5.0 Vdc

POLmax = 70 mWdc

VSS = 0 Vdc

4.0

8.0

12

16

(VOL – VSS), SINK DEVICE VOLTAGE (Vdc)

Figure 2. Typical Output Sink

Characteristics

(a) Inputs D, Ph, and BI low, and Inputs A, B, and LD high.

20 ns

C

20 ns

90%

50%

VDD

10%

VSS

tPHL

tPLH

g

90% 50%

10%

tTHL tTLH

VOH

VOL

(b) Inputs D, Ph, and BI low, and Inputs A and B high.

20 ns

LD

90%

50%

VDD

10%

tsu

VSS

th

VDD

C

50%

50%

VSS

VOH

g

VOL

(c) Data DCBA strobed into latches

VDD

LD

50%

VSS

tWH

Figure 4. Dynamic Signal Waveforms

MOTOROLA CMOS LOGIC DATA

MC14544B

5

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