LTC1955EUH Linear Technology, LTC1955EUH Datasheet - Page 20

• 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

LTC1955
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LTC1755/LTC1756
LTC1555
LTC1555L-1.8
LTC4555
LTC4556
LTC4557
20
0.1μF
0.1μF
DB9
GND
RD
TD
5
2
3
0.1μF
7
8
5
6
2
3
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DR1OUT
RX1IN
C1
C1
C2
C2
V
+
–
+
–
+
1
RXEN
LTC1348CG
16
V
DREN
–
28
DESCRIPTION
ISO 7816-3 and EMV Compatible Smart Card Interface
SIM Power Supply and Level Translator Step-Up/Step-Down
Charge Pump
SIM Power Supply and Level Translator Step-Up/Step-Down
Charge Pump
SIM Power Supply and Level Translator
SIM Power Supply and Level Translator
SIM Power Supply and Level Translator
0.1μF
0.1μF
17
RX1OUT
DR1IN
V
GND
CC
●
C3
C3
4
15
FAX: [phone]
+
–
25
24
27
26
0.1μF
40
39
PD1 (TXD)
PD0 (RXD)
V
RL
MOD B
18
Battery-Powered RS232 to Dual Smart Card Interface
V
SS
21
20
MC68L11E9PB2
●
MODA
V
www.linear.com
0.1μF
DD
27pF
45
22
V
RH
EXTAL
19
26
(MOSI) PD3
(MISO) PD2
XIRQ
(SCK) PD4
10M
(IC3) PA0
(SS) PD5
(2MHz) E
37
47k
XTAL
RST
PB1
PB0
PC0
IRQ
27
8.000MHz
27pF
36
38
42
41
43
44
24
8
9
1
28
1
V
RST
CC18
4
LTC1728ES5-1.8
RESET
V
GND
CC3
5
2
V
CCA
3
47k
COMMENTS
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
FAULT
1k
= 3V/5V, V
= 3V/5V, V
= 1.8V/3V/5V, V
= 1.8V/3V, V
= 1.8V/3V, V
= 1.8V/3V, V
24
27
28
26
25
31
32
30
29
FAULT
D
D
SCLK
LD
ASYNC
SYNC
R
DATA
C
0.1μF
IN
OUT
IN
–
11
1μF
DV
C
CC
+
IN
IN
1
14
IN
IN
IN
LTC1955EUH
= 2.7V to 6V, SSOP-16/-24 Package
= 2.7V to 10V, SSOP-16/-20 Package
CPO
15
= 3V to 6V, 3mm × 3mm QFN Package
= 3V to 6V, 3mm × 3mm QFN Package
= 3V to 6V, 3mm × 3mm QFN Package
180k
IN
4.7μF
UNDERV
= 2.6V to 6V, SSOP-16 Package
GND
23
9, 10
262k
© LINEAR TECHNOLOGY CORPORATION 2002
PRES A
PRES B
NC/NO
V
RST A
RST B
CLK A
CLK B
BATT
I/O A
V
I/O B
V
C8A
C4A
CCA
CCB
12, 13
22
4.7μF
3
4
5
6
7
8
2
20
19
18
17
21
LT 0708 REV B • PRINTED IN USA
+
1μF
1μF
Li-ION
0.1μF
0.1μF
C8
C4
C7
C2
C3
C1
C7
C2
C3
C1
CARD A
CARD B
C5
C5
1955 TA02
1955fb