MC74AC194 MC74ACT194

5-4

FACT DATA

AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)

Symbol

Parameter

VCC*

(V)

74AC

74AC

Unit

Fig.

No.

Symbol

Parameter

VCC*

(V)

TA = +25°C

CL = 50 pF

TA = –40°C

to +85

°C

CL = 50 pF

Unit

Fig.

No.

Min

Max

Min

Max

fmax

Maximum Input

3.3

130

115

MHz

3-3

fmax

Frequency

5.0

210

150

MHz

3-3

tPLH

Propagation Delay

3.3

2.0

14.5

1.5

16.0

ns

3-6

tPLH

CP to Q

5.0

2.0

12.5

1.5

14.0

ns

3-6

tPHL

Propagation Delay

3.3

2.0

14.5

1.5

16.0

ns

3-6

tPHL

CP to Q

5.0

2.0

12.5

1.5

14.0

ns

3-6

tPHL

Propagation Delay

3.3

2.0

11.0

1.5

12.0

ns

3-6

tPHL

Reset to Q

5.0

2.0

9.0

1.5

10.0

ns

3-6

* Voltage Range 3.3 V is 3.3 V

±0.3 V.

Voltage Range 5.0 V is 5.0 V

±0.5 V.

AC OPERATING REQUIREMENTS

Symbol

Parameter

VCC*

(V)

74AC

74AC

Unit

Fig.

No.

Symbol

Parameter

VCC*

(V)

TA = +25°C

CL = 50 pF

TA = –40°C

to +85

°C

CL = 50 pF

Unit

Fig.

No.

Guaranteed Minimum

ts

Setup Time,

3.3

4.0

5.0

ns

3-9

ts

Pn to Clock

5.0

2.5

3.5

ns

3-9

th

Hold Time,

Pn to Clock

3.3

3.5

4.0

ns

3-9

th

Pn to Clock

5.0

2.0

2.5

ns

3-9

ts

Setup Time, Sn to CP

3.3

5.5

6.5

ns

3-9

ts

Setup Time, Sn to CP

5.0

4.0

5.0

ns

3-9

th

Hold Time,

Sn to CP

3.3

3.5

4.0

ns

3-9

th

Sn to CP

5.0

2.0

2.5

ns

3-9

ts

Setup Time,

DSR or DSL to Clock

3.3

5.5

6.0

ns

3-9

ts

DSR or DSL to Clock

5.0

4.0

4.5

ns

3-9

th

Hold Time,

DSR or DSL to Clock

3.3

1.5

2.0

ns

3-9

th

DSR or DSL to Clock

5.0

2.0

2.5

ns

3-9

tw

CP Pulse Width

3.3

5.5

6.0

ns

3-6

tw

CP Pulse Width

5.0

4.0

4.5

ns

3-6

tw

MR Pulse Width

3.3

5.5

6.0

ns

3-9

tw

MR Pulse Width

5.0

4.0

4.5

ns

3-9

trec

Recovery TIme

3.3

1.5

1.5

ns

3-9

trec

MR to CP

5.0

1.0

1.0

ns

3-9

* Voltage Range 3.3 V is 3.3 V

±0.3 V.

Voltage Range 5.0 V is 5.0 V

±0.5 V.