ltc1755egn-trpbf Linear Technology Corporation, ltc1755egn-trpbf Datasheet - Page 15

• Manufacturer Part Number: ltc1755egn-trpbf
• Description: Smart Card Interface
• Manufacturer: Linear Technology Corporation

APPLICATIO S I FOR ATIO
PACKAGE DESCRIPTIO
The only possible next state is Idle/Deactivation which is
achieved by disabling the LTC1755/LTC1756 via the PWR
pin (i.e., PWR = DV
The alarm indication can be cleared by rapidly cycling the
PWR pin. However, a new activation cycle will not begin
until V
ACTIVE
V
RST = R
I/O, AUX2, AUX1, DATA, AUX2IN, AUX1IN = Ready for
data (after READY becomes low)
CARD = PRES
ALARM = H
CC
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
= 3V or 5V (as determined by the 5V/3V pin)
(0.178 – 0.249)
0.007 – 0.0098
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
CC
IN
is or has dropped below approximately 1V.
, CLK = C
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
0.007 – 0.0098
(0.178 – 0.249)
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
(0.406 – 1.270)
0.016 – 0.050
NC/NO
U
CC
IN
).
(0.406 – 1.270)
0.016 – 0.050
U
0 – 8 TYP
0.015 0.004
(0.38 0.10)
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
0 – 8 TYP
W
0.015 0.004
(0.38 0.10)
(0.203 – 0.305)
0.008 – 0.012
U
45
(1.351 – 1.727)
0.053 – 0.068
24-Lead Plastic SSOP (Narrow 0.150)
Dimensions in inches (millimeters) unless otherwise noted.
16-Lead Plastic SSOP (Narrow 0.150)
45
(0.203 – 0.305)
0.008 – 0.012
U
(1.351 – 1.727)
0.053 – 0.068
(LTC DWG # 05-08-1641)
(LTC DWG # 05-08-1641)
GN Package
GN Package
0.0250
(0.635)
BSC
FAULT TIMEOUT
Same as Active except:
The duration of a fault is being measured. If the fault
duration exceeds 5 s then the Alarm/Deactivation state
follows. If the fault duration is less than 5 s, then the
device is returned to the Active state.
POWER OFF
(0.635)
0.0250
BSC
(0.102 – 0.249)
0.004 – 0.0098
(0.102 – 0.249)
0.004 – 0.0098
Figure 9. LTC1755/LTC1756 State Diagram
(5.817 – 6.198)
0.229 – 0.244
(5.817 – 6.198)
0.229 – 0.244
PWR = DV
DEACTIVATION
DEACTIVATION
ALARM
CC
24
IDLE
1
16 15 14 13
LTC1755/LTC1756
1
23
2 3
22
2 3
(4.801 – 4.978)
0.189 – 0.196*
21
PRES NC/NO
4
(8.560 – 8.738)
20
4
0.337 – 0.344*
5 6 7
12 11 10 9
19
5 6 7
PRES NC/NO
PWR = DV
FAULT > 5 s
PWR = 0V
18
17
or
8 9 10 11 12
16
8
CC
15 1413
GN16 (SSOP) 1098
(3.810 – 3.988)
0.150 – 0.157**
(0.229)
0.009
REF
(3.810 – 3.988)
0.150 – 0.157**
TIMEOUT
GN24 (SSOP) 1098
NO
FAULT
ACTIVE
FAULT
(0.838)
0.033
REF
15
1755 F09
FAULT