Capacitance, Ac characteristics – Rainbow Electronics W49F002U User Manual

Page 13

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W49F002U

Publication Release Date: April 2000

- 13 -

Revision A2

Power-up Timing

PARAMETER SYMBOL

TYPICAL

UNIT

Power-up to Read Operation

T

PU

. READ

100

µ

S

Power-up to Write Operation

T

PU

. WRITE

5

mS

CAPACITANCE

(V

DD

= 5.0V, T

A

= 25

°

C, f = 1 MHz)

PARAMETER SYMBOL

CONDITIONS MAX.

UNIT

I/O Pin Capacitance

C

I/O

V

I/O

= 0V

12

pf

Input Capacitance

C

IN

V

IN

= 0V

6

pf

AC CHARACTERISTICS

AC Test Conditions

PARAMETER CONDITIONS

Input Pulse Levels

0V to 3.0V

Input Rise/Fall Time

< 5 nS

Input/Output Timing Level

1.5V/1.5V

Output Load

1 TTL Gate and C

L

= 100 pF for 120 nS;

C

L

= 30 pF for 70 nS /90 nS

AC Test Load and Waveform

+5V

1.8K

1.3K

D

OUT

30 pF for 70nS / 90nS

(Including Jig and Scope)

Input

3V

0V

Test Point

Test Point

1.5V

1.5V

Output

100 pF for 120nS

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