LTC1955EUH Linear Technology, LTC1955EUH Datasheet - Page 18

• Manufacturer Part Number: LTC1955EUH
• Description: IC INTERFACE DL SMART CARD 32QFN
• Manufacturer: Linear Technology

Specifications of LTC1955EUH

• Controller Type: Smart Card Interface
• Interface: 4-Wire Serial
• Voltage - Supply: 1.7 V ~ 5.5 V
• Current - Supply: 10µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPLICATIONS INFORMATION
LTC1955
18
INTERFACE
INTERFACE
COMMAND
POWER
4-WIRE
4-WIRE
FAULT
INPUT
CARD
Figure 6. Multiple LTC1955s Daisychained Together
4.7μF
4.7μF
4.7μF
12, 13
12, 13
12, 13
9, 10
9, 10
9, 10
23
24
27
28
26
25
29
30
32
31
23
24
27
28
26
25
29
30
32
31
23
24
27
28
26
25
29
30
32
31
1
1
1
V
GND
DV
UNDERV
FAULT
D
D
SCLK
LD
DATA
R
SYNC
ASYNC
V
GND
DV
UNDERV
FAULT
D
D
SCLK
LD
DATA
R
SYNC
ASYNC
V
GND
DV
UNDERV
FAULT
D
D
SCLK
LD
DATA
R
SYNC
ASYNC
BATT
BATT
BATT
IN
OUT
IN
IN
OUT
IN
IN
OUT
IN
CC
CC
CC
C
C
C
–
–
–
11
11
11
1μF
1μF
1μF
C
C
C
+
+
+
LTC1955
LTC1955
LTC1955
14
14
14
PRES B
PRES B
PRES B
21
21
21
PRES A
PRES A
PRES A
CPO
CPO
CPO
2
2
2
15
15
15
4.7μF
4.7μF
4.7μF
VENDOR CARD
VENDOR CARD
VENDOR CARD
VENDOR CARD
SMART CARD
SMART CARD
1955 F07
1955fb