SN74SSTV16857

14BIT REGISTERED BUFFER

WITH SSTL_2 INPUTS AND OUTPUTS

SCES344E – DECEMBER 2000 – REVISED NOVEMBER 2002

4

POST OFFICE BOX 655303

timing requirements over recommended operating free-air temperature range (unless otherwise

noted) (see Figure 1)

VCC = 2.5 V

± 0.2 V†

UNIT

MIN

MAX

UNIT

fclock

Clock frequency

200

MHz

tw

Pulse duration

CLK, CLK high or low

2.5

ns

tact

Differential inputs active time (see Note 5)

22

ns

tinact

Differential inputs inactive time (see Note 6)

22

ns

t

Set p time

Fast slew rate (see Notes 7 and 9)

Dt bf

CLK

↑ CLK↓

0.75

ns

tsu

Setup time

Slow slew rate (see Notes 8 and 9)

Data before CLK

↑, CLK↓

0.9

ns

t

Hold time

Fast slew rate (see Notes 7 and 9)

D t

ft

CLK

↑ CLK↓

0.75

ns

th

Hold time

Slow slew rate (see Notes 8 and 9)

Data after CLK

↑, CLK↓

0.9

ns

† For this test condition, VDDQ always is equal to VCC.

NOTES:

5. Data inputs must be held low for a minimum time of tact min, after RESET is taken high.

6. Data and clock inputs must be held at valid levels (not floating) for a minimum time of tinact min, after RESET is taken low.

7. Data signal input slew rate

≥1 V/ns

8. Data signal input slew rate

≥0.5 V/ns and <1 V/ns

9. CLK, CLK input slew rates are

≥1 V/ns.

switching characteristics over recommended operating free-air temperature range (unless

otherwise noted) (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 2.5 V

± 0.2 V†

UNIT

PARAMETER

(INPUT)

(OUTPUT)

MIN

MAX

UNIT

fmax

200

MHz

tpd

CLK and CLK

Q

1.1

2.8

ns

tPHL

RESET

Q

5

ns

† For this test condition, VDDQ always is equal to VCC.