LTC1756 Linear Technology, LTC1756 Datasheet - Page 3

• Manufacturer Part Number: LTC1756
• Description: Smart Card Interface
• Manufacturer: Linear Technology

temperature range, otherwise specificatons are at T
PARAMETER
RIN, CIN, PWR, 5V/3V
High Input Voltage Threshold (V
Low Input Voltage Threshold (V
Input Current (I
READY, CARD
Pull-Up Current (I
Low Level Output Voltage (V
Smart Card Input/Output I/O, V
High Input Voltage Threshold (V
Low Input Voltage Threshold (V
High Level Output Voltage (V
Low Level Output Voltage (V
Rise/ Fall Time
Short-Circuit Current
CLK
High Level Output Voltage (V
Low Level Output Voltage (V
CLK Rise/Fall Time
CLK Frequency
RST
High Level Output Voltage (V
Low Level Output Voltage (V
RST Rise/Fall Time
PRES
High Input Voltage Threshold (V
Low Input Voltage Threshold (V
PRES Pull-Up Current
PRES Debounce Time
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1756 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.
IH
/I
OH
IL
)
)
OL
OL
OL
OL
OH
OH
OH
)
)
)
)
)
)
)
CC
IL
IL
IL
IH
IH
IH
)
)
)
)
)
)
= 3V or 5V
CONDITIONS
Sink Current = – 20 A
I
I
Source Current = 20 A, DATA = V
Sink Current = – 1mA, DATA = 0V (Note 3)
Loaded with 30pF, 10% to 90%
Shorted to V
Source Current = 100 A
Sink Current = – 200 A
CLK Loaded with 30pF
CLK Loaded with 30pF
Source Current = 200 A
Sink Current = – 200 A
Loaded with 30pF
V
Proportional to the 0.68 F Charge Pump Capacitor
IH(MAX)
IL(MAX)
PRES
= 0V
= 1mA
= 20 A
A
CC
= 25 C. V
The
IN
denotes specifications which apply over the full specified
= 2.7V to 5.5V, unless otherwise noted.
Note 3: The DATA and I/O pull-down drivers must sink up to 250 A
sourced by the internal current sources.
IN
V
0.6 • V
0.8 • V
0.8 • V
0.7 • V
0.7 • V
CC
MIN
250
0.5
–1
40
5
– 0.5
CC
CC
CC
IN
IN
0.5 • V
0.5 • V
0.5 • V
0.5 • V
0.5 • V
0.5 • V
TYP
3.5
80
1
CC
CC
IN
IN
IN
IN
LTC1756
0.2 • V
0.2 • V
MAX
0.3
0.8
0.3
0.5
0.3
0.3
0.5
16
1
5
IN
IN
UNITS
3
MHz
mA
ms
nA
ns
V
V
A
V
V
V
V
V
V
V
V
V
V
V
A
s
s