DC Electrical Characteristics

The following specifications apply for DV

1.4 MHz, unless otherwise specified. Boldface limits apply for T

Symbol

Parameter

Conditions

Typ

Limit

Units

(Note 7)

(Note 8)

(Limit)

V

IN(1)

Logical “1” Input Voltage

DV

2.0

V (min)

V

IN(0)

Logical “0” Input Voltage

DV

0.8

V (max)

I

IN(1)

Logical “1” Input Current

0.1

1.0

µA (max)

I

IN(0)

Logical “0” Input Current

0.1

1.0

µA (max)

V

OUT(1)

Logical “1” Output Voltage

DV

I

2.4

V (min)

I

4.25

V (min)

V

OUT(0)

Logical “0” Output Voltage

DV

0.4

V (max)

I

I

OUT

Pins DB0–DB11

0.1

3

µA (max)

Leakage Current

C

OUT

TRI-STATE Output Capacitance

Pins DB0–DB11

5

pF

C

IN

Digital Input Capacitance

4

pF

DI

CC

DV

2

10

mA (max)

AI

CC

AV

32

50

mA (max)

I

STANDBY

Standby Current (DI

50

µA

AC Electrical Characteristics

The following specifications apply for DV

1.4 MHz, unless otherwise specified. Boldface limits apply for T

Symbol

Parameter

Conditions

Typ

Limit

Units

(Note 7)

(Note 8)

(Limits)

f

s

Maximum Sampling Rate

1.5

MHz (min)

(1/t

t

CONV

Conversion Time

593

560

ns (min)

(S/H Low to EOC High)

710

ns (max)

t

AD

Aperture Delay

20

ns

(S/H Low to Input Voltage Held)

t

S/H

S/H Pulse Width

10

5

ns (min)

400

ns (max)

t

EOC

S/H Low to EOC Low

90

60

ns (min)

126

ns (max)

t

ACC

Access Time

C

10

20

ns (max)

(RD Low or OE High to Data Valid)

t

TRI-STATE Control

R

25

40

ns (max)

(RD High or OE Low to Databus TRI-STATE)

t

INTH

Delay from RD Low to INT High

C

35

60

ns (max)

t

INTL

Delay from EOC High to INT Low

C

−25

−35

ns (min)

−10

ns (max)

t

UPDATE

EOC High to New Data Valid

5

15

ns (max)

t

MS

Multiplexer Address Setup Time

50

ns (min)

(MUX Address Valid to EOC Low)

t

MH

Multiplexer Address Hold Time

50

ns (min)

(EOC Low to MUX Address Invalid)

t

CSS

CS Setup Time

20

ns (min)

(CS Low to RD Low, S/H Low, or OE High)

www.national.com

3