4

6/26/01

SPT5420

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

20

ns

0ns

CS

Pulse Width Low

50

ns

WR

Pulse Width Low

50

ns

CS

0ns

WR

0ns

Data Setup

25

ns

Data Hold

0ns

15

us

LDAC

Pulse Width Low

50

ns

CLR

Pulse Activation

300

ns

NOTES:

All digital input rise and fall times are measured from 10% to 90% of +5 V.

TIMING CHARACTERISTICS

CS

WR

A0–A2

D0–D12

LDAC

CS

WR

A0–A2

D0–D12

CLR

Figure 1a – Timing Diagram: Latched Mode

Figure 1b – Timing Diagram: Transparent Mode