BU4042B Ver la hoja de datos (PDF) - ROHM Semiconductor

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Lista de partido

BU4042B

Quad D latch

ROHM Semiconductor 

Standard ICs

BU4042B

Switching characteristics (unless otherwise noted, Ta = 25°C, CL = 50pF, VSS = 0V)

Parameter

Symbol Min.

Typ.

Max.

Unit

VDD (V)

—

180

—

5

Output rise time

tTLH

—

90

—

ns

10

—

65

—

15

—

100

—

5

Output fall time

tTHL

—

50

—

ns

10

—

40

—

15

—

220

—

5

Propagation delay time

D→Q, Q

tPLH

tPHL

—

90

—

ns

10

—

70

—

15

—

220

—

5

Propagation delay time

CLOCK→Q, Q

tPLH

tPHL

—

90

—

ns

10

—

70

—

15

—

150

—

5

Minimum clock pulse width tWH

tWL

—

50

—

ns

10

—

40

—

15

—

50

—

5

Hold time

tH

—

25

—

ns

10

—

20

—

15

—

50

—

5

Setup time

tSU

—

20

—

ns

10

—

5

—

15

Input capacitance

CIN

—

5

—

pF

—

Conditions

—

—

—

—

—

—

—

—

Measurement circuit

Fig.1

Fig.1

Fig.1

Fig.2

Fig.2

Fig.2

Fig.2

—

•Measurement circuits

VDD

16

5

VDD

CK

Q1

2

6

POL

Q1

3

Q2

10

4

D1

Q2

9

Q3

11

7

D2

Q3

12

13

D3

Q4

1

14

P.G.

D4

VSS

Q4

5

8

VSS

Note: Connect CL = 50pF to each of the output pins.

Fig. 1 (a) Switching characteristics measurement circuit!

20ns

20ns

D

tPLH

tPHL

Q

tPHL

Q

tTLH

tTHL

tTHL

tTLH

Fig. 1 (b) Switching time measurement waveform!

3

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