MC74HC373A datasheet(4/7 Pages) ONSEMI

Part #	MC74HC373A

Description	Octal 3-State Non-Inverting Transparent Latch

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MC74HC373A

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TIMING REQUIREMENTS (CL = 50 pF, Input tr = tf = 6.0 ns)

Symbol

Parameter

Figure

VCC

Volts

Guaranteed Limit

Unit

–55 to 25

_C

v 85_C

v 125_C

Min

Max

Min

Max

Min

Max

tsu

Minimum Setup Time, Input D to Latch Enable

4

2.0

3.0

4.5

6.0

25

20

5.0

30

25

6.0

40

30

8.0

7.0

ns

th

Minimum Hold Time, Latch Enable to Input D

4

2.0

3.0

4.5

6.0

5.0

5 0

5.0

ns

tw

Minimum Pulse Width, Latch Enable

2

2.0

3.0

4.5

6.0

60

23

12

10

75

27

15

13

90

32

18

15

ns

tr, tf

Maximum Input Rise and Fall Times

1

2.0

3.0

4.5

6.0

1000

800

500

400

1000

800

500

400

1000

800

500

400

ns

SWITCHING WAVEFORMS

VCC

GND

tf

tr

INPUT D

Q

10%

50%

90%

10%

50%

90%

tTLH

tPLH

tPHL

tTHL

VCC

GND

50%

LATCH ENABLE

tPLH

tPHL

Q

tw

50%

Figure 1.

Figure 2.

Figure 3.

Figure 4.

50%

1.3 V

Q

tPZL

tPLZ

tPZH

tPHZ

10%

90%

VCC

GND

HIGH

IMPEDANCE

VOL

VOH

HIGH

IMPEDANCE

Q

OUTPUT

ENABLE

50%

INPUT D

LATCH ENABLE

VCC

GND

VALID

th

tsu

50%

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