LTC4556

4

4556f

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: This specification applies to all three smart card voltage classes:

1.8V, 3V and 5V.

Note 4: The LTC4556E is guaranteed to meet performance specifications

from 0

°C to 70°C. Specifications over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls.

Note 5: Based on long term current density limitation.

TYPICAL PERFOR A CE CHARACTERISTICS

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

4556 G01

500

400

300

200

100

0

TEMPERATURE (

°C)

–40

–15

10

35

60

85

4556 G02

6.0

5.5

5.0

4.5

4.0

3.5

CLK

I/O

TEMPERATURE (

°C)

–40

–15

10

35

60

85

4556 G03

10

9

8

7

6

I/O and CLK Short-Circuit Current

vs Temperature

(CLK in Bidirectional Mode)

Charge Pump Open-Loop Output

Resistance vs Temperature

FAULT

Sink Current = – 200

µA

q

0.005

0.3

V

Leakage Current

q

1

µA

Serial Port Timing

8

ns

8

ns

15

60

ns

SCLK Low Time

50

ns

SCLK High Time

50

ns

LD Pulse Width

50

ns

SCLK to LD

50

ns

LD to SCLK

0ns