74HC595DR2G View Datasheet(PDF) - ON Semiconductor

Part Name

Description

MFG CO.

74HC595DR2G

8−Bit Serial−Input/Serial or Parallel−Output Shift Register with Latched 3−State Outputs

ON Semiconductor 

SHIFT

CLOCK

OUTPUT

SQH

tr

tf

90%

50%

10%

tw

90%

50%

10%

1/fmax

tPLH

tPHL

tTLH

tTHL

Figure 1.

LATCH

CLOCK

50%

QA−QH

90%

50%

OUTPUTS 10%

tPLH tPHL

tTLH

tTHL

Figure 3.

SERIAL

INPUT A

SWITCH

CLOCK

VALID

50%

tsu

th

50%

Figure 5.

74HC595

SWITCHING WAVEFORMS

VCC

GND

VCC

GND

RESET

OUTPUT

SQH

SHIFT

CLOCK

OUTPUT

ENABLE

OUTPUT Q

OUTPUT Q

tw

VCC

50%

GND

tPHL

50%

trec

VCC

50%

GND

Figure 2.

50%

tPZL

tPLZ

50%

tPZH

tPHZ

50%

Figure 4.

VCC

GND

HIGH

IMPEDANCE

10% VOL

90% VOH

HIGH

IMPEDANCE

SHIFT

VCC

CLOCK

50%

VCC

GND

GND

tsu

LATCH

VCC

VCC

CLOCK

50%

GND

GND

tw

Figure 6.

DEVICE

UNDER

TEST

TEST POINT

OUTPUT

CL*

*Includes all probe and jig capacitance

Figure 7.

TEST CIRCUITS

DEVICE

UNDER

TEST

TEST POINT

OUTPUT

1 kW

CL*

CONNECT TO VCC WHEN

TESTING tPLZ AND tPZL.

CONNECT TO GND WHEN

TESTING tPHZ AND tPZH.

*Includes all probe and jig capacitance

Figure 8.

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