4

SY605

Micrel

AC CHARACTERISTICS

The information in this table is guaranteed but not 100% production tested.

See Figure 2 for a graphical representation.

Maximum Tspan (ns)

Minimum Trigger

Maintaining Linearity

Periods (ns)

of

±1 LSB

4.0

8.0

5.1

10.0

5.8

11.1

6.75

12.5

8.1

14.3

9.9

16.6

12.0

20.0

15.5

25.0

22.0

33.3

ECL input values are -0.9 to -1.7V, with input rise/fall times

≤ 2ns,

measured between the 20% and 80% points. Timing reference

points at 50% for inputs and outputs. OUT and OUT loading with 50

Ω

Symbol

Parameter

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Unit

——

125

——

125

——

125

MHz

Trigger Width High

2.0

1.0

—

2.0

1.0

—

2.0

1.0

—

ns

Output Pulse Width High Time

2.5

3.5

4.5

2.5

3.5

4.5

2.5

3.5

4.5

ns

Output Pulse Rise/Fall Time (20/80%)

—

550

750

—

550

750

—

550

750

ps

Output Pulse Spacing

Span = 4ns @ 1 LSB

8.0

——

8.0

——

8.0

——

ns

Minimum Delay Time vs. Tspan

∆ T00 / ns (Tspan = 5 to 10ns)

—

125

220

—

125

220

—

125

220

ps/ns

Output Delay

ns

1 LSB

Tspan (Tspan = Tmax - Tmin)

4.0

—

40

4.0

—

40

4.0

—

40

ns

1 LSB

Resolution (Tspan / 225)

15.7

—

157

15.7

—

157

15.7

—

157

ps

Tempo (5ns Span)

∆ Tspan /°C

—

2

——

2

——

2

—

ps/

°C

∆ Tmin /°C

—

2

——

2

——

2

—

ps/

°C

Power Supply Rejection

—

60

——

60

——

60

—

ps/V

(Data = 0-FF HEX, Tspan = 5ns)

CE Setup Time

2.0

——

2.0

——

2.0

——

ns

CE Hold Time

1.5

——

1.5

——

1.5

——

ns

WRITE Pulse Width High Time

2.0

——

2.0

——

2.0

——

ns

D0 - D7 Setup Time

1.0

——

1.0

——

1.0

——

ns

D0 - D7 Hold Time

1.5

——

1.5

——

1.5

——

ns

Maximum Tspan and Trigger Rates

NOTE:

1. See chart below:

to -2.0V. Typical values are based on nominal temperature, i.e., and

nominal voltage, i.e., - 5.2V.