LTC1755EGN Linear Technology, LTC1755EGN Datasheet - Page 4

• Manufacturer Part Number: LTC1755EGN
• Description: IC SMART CARD INTERFACE 24SSOP
• Manufacturer: Linear Technology

Specifications of LTC1755EGN

• Applications: Smart Card
• Voltage - Supply: 2.7 V ~ 6 V
• Package / Case: 24-SSOP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -

ELECTRICAL CHARACTERISTICS
LTC1755/LTC1756
temperature range, otherwise specificatons are at T
PARAMETER
Controller Inputs/Outputs DATA, AUX1IN, AUX2IN, DV
High Input Voltage Threshold (V
Low Input Voltage Threshold (V
High Level Output Voltage (V
Low Level Output Voltage (V
Output Rise/Fall Time
Input Current (I
RIN, CIN, PWR, CS, 5V/3V, NC/NO
High Input Voltage Threshold (V
Low Input Voltage Threshold (V
Input Current (I
READY, ALARM, CARD
Pull-Up Current (I
Low Level Output Voltage (V
Smart Card Inputs/Outputs I/O, AUX1, AUX2, 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
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1755/LTC1756 are 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.
4
IH
IH
/I
/I
OH
IL
IL
)
)
)
OL
OL
OL
OL
OL
OH
OH
OH
OH
)
)
)
)
)
)
)
)
)
IL
IL
IL
IL
IH
IH
IH
IH
)
)
)
)
)
)
)
)
CC
CONDITIONS
(Note 4)
(Note 4)
Source Current = 20 A (Note 4)
Sink Current = – 500 A (Note 3)
Loaded with 30pF, 10% to 90%
CS = DV
(Note 4)
(Note 4)
Sink Current = – 20 A
I
I
Source Current = 20 A
DATA, AUX1IN, AUX2IN = DV
Sink Current = – 1mA
DATA, AUX1IN, AUX2IN = 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
Source Current = 50 A
Sink Current = – 200 A
Loaded with 30pF, 10% to 90%
(Note 4)
(Note 4)
V
Proportional to the 0.68 F Charge Pump Capacitor
IH(MAX)
IL(MAX)
PRES
= 3V or 5V
= 0V
CC
= 1mA
CC
= 20 A
= 3V
A
CC
= 25 C. DV
The
CC
denotes specifications which apply over the full specified
= 2V to 5.5V, unless otherwise noted (Note 4).
CC
Note 3: The DATA, AUX1IN, AUX2IN, AUX1, AUX2 and I/O pull-down
drivers must sink up to 250 A sourced by the internal current sources.
Note 4: On the LTC1756, DV
Specifications that call out DV
DV
0.7 • DV
0.7 • DV
V
0.7 • DV
CC
V
0.6 • V
0.8 • V
0.8 • V
CC
CC
CC
CC
is internally connected to the V
MIN
250
0.5
–1
–1
40
– 0.5V
should be referred to V
5
– 0.5
– 0.6 0.5 • DV
CC
CC
CC
CC
CC
CC
0.5 • DV
0.5 • DV
0.5 • DV
0.5 • DV
0.5 • DV
0.5 • V
0.5 • V
TYP
3.5
80
1
CC
CC
CC
CC
CC
CC
CC
CC
0.2 • DV
0.2 • DV
IN
MAX
0.3
0.3
0.5
0.3
0.8
0.3
0.5
7.5
0.3
0.3
0.5
16
1
1
instead.
CC
CC
IN
pin.
UNITS
MHz
mA
ms
nA
ns
V
V
V
V
A
V
V
A
V
V
V
V
V
V
V
V
V
V
V
V
A
s
s
s