MC74HC259A Datasheet, PDF(5/9 Page) ON Semiconductor – 8-Bit Addressable Latch 1-of-8 Decoder

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MC74HC259A Datasheet, PDF (5/9 Pages) ON Semiconductor – 8-Bit Addressable Latch 1-of-8 Decoder

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MC74HC259A

SWITCHING WAVEFORMS

VCC

DATA IN

GND

DATA IN

tPLH

OUTPUT Q

90%

50%

10%

90%

50%

10%

tTLH

Figure 2.

VCC

GND

tPHL

tTHL

ADDRESS

SELECT

OUTPUT Q

50%

tPHL

50%

VCC

GND

VCC

GND

tPLH

Figure 3.

VCC

DATA IN

VCC

GND

DATA IN

GND

VCC

ENABLE

50%

50% 50%

RESET

50%

GND

tPHL

tPLH

tPHL

GND

OUTPUT Q

50%

Figure 4.

Figure 5.

DATA IN

OR 50%

ADDRESS

SELECT

ENABLE

th(H)

tsu

50%

Figure 6.

TEST POINT

VCC

GND

th(L)

tsu

VCC

OUTPUT

DEVICE

UNDER

TEST

CL*

GND

*Includes all probe and jig capacitance

Figure 7. Test Circuit

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