DS1720

13 of 14

AC ELECTRICAL CHARACTERISTICS

(-55

°C to +125°C; V

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Temperature Conversion

Time

750

ms

Data to CLK Setup

35

ns

5

CLK to Data Hold

40

ns

5

CLK to Data Delay

150

ns

5, 6, 7

CLK Low Time

285

ns

5

CLK High Time

285

ns

5

CLK Frequency

DC

1.75

MHz

5

CLK Rise and Fall

500

ns

RST

to CLK Setup

100

ns

5

40

ns

5

RST

Inactive Time

125

ns

5, 8

CLK High to I/O High-Z

50

ns

5

RST

Low to I/O High-Z

50

ns

5

Convert Pulse Width

250 ns

500 ms

9

Input Capacitance

5

pF

I/O Capacitance

10

pF

EEPROM

AC ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

EEPROM Write Cycle Time

10

ms

EEPROM Writes

-55

°C to +55°C

50k

Writes

EEPROM Data Retention

-55

°C to +55°C

10

Years

NOTES:

1. All voltages are referenced to ground.

2. Logic one voltages are specified at a source current of 1 mA.

3. Logic zero voltages are specified at a sink current of 4 mA.

7. Load capacitance = 50 pF.

9. 250ns is the guaranteed minimum pulse width for a conversion to start; however, a smaller pulse

width may start a conversion.