LTC1555LEGN-1.8 Linear Technology, LTC1555LEGN-1.8 Datasheet

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LTC1555LEGN-1.8

Manufacturer Part Number
LTC1555LEGN-1.8
Description
IC LEVEL TRANSLATER 16-SSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1555LEGN-1.8

Logic Function
Level Shifter
Number Of Bits
1
Input Type
Voltage
Output Type
Voltage
Number Of Channels
1
Number Of Outputs/channel
1
Differential - Input:output
No/No
Propagation Delay (max)
18ns
Voltage - Supply
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
16-SSOP
Supply Voltage
1.8 V ~ 5.5 V
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Rate
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1555LEGN-1.8
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC1555LEGN-1.8
Manufacturer:
LT
Quantity:
1 000
Part Number:
LTC1555LEGN-1.8
Manufacturer:
LT
Quantity:
20 000
Part Number:
LTC1555LEGN-1.8#PBF
Manufacturer:
LT/凌特
Quantity:
20 000
Part Number:
LTC1555LEGN-1.8#TR
Manufacturer:
ON
Quantity:
6 480
Part Number:
LTC1555LEGN-1.8TR
Manufacturer:
LT
Quantity:
20 000
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
Buck/Boost Charge Pump Generates 3V or 5V
Input Voltage Range: 2.6V to 6V
Controller V
>10kV ESD on All SIM Contact Pins
Short-Circuit and Overtemperature Protected
3V to 5V Signal Level Translators
Very Low Operating Current: 40 A
Very Low Shutdown Current: <1 A
Soft-Start Limits Inrush Current at Turn-On
1MHz Switching Frequency
Available in 16-Pin Narrow SSOP Package
SIM Interface in GSM Cellular Telephones
Smart Card Readers
CC
CONTROLLER
Range: 1.425V to 4.4V
GSM
U
V
CC
1.425V TO 4.4V
U
1
2
3
4
5
6
7
8
CIN
RIN
DATA
DDRV
DV
N/C
M1
M0
CC
LTC1555L
GSM Cellular Telephone SIM Interface
GND
CLK
RST
C1
C1
V
V
I/O
CC
IN
+
16
15
14
13
12
11
10
9
0.1 F
2.6V TO 6V
DESCRIPTIO
The LTC
shifting needed for low voltage GSM cellular telephones to
interface with either 3V or 5V Subscriber Identity Modules
(SIMs). The part contains a patented buck/boost charge
pump DC/DC converter* that delivers a regulated V
supply voltage to the SIM card. Input voltage may range
from 2.6V to 6V allowing direct connection to the battery.
The output voltage may be programmed to 3V, 5V or direct
connection to the V
Internal level translators allow controllers operating with
supplies as low as 1.425V to interface with 3V and 5V
SIMs. A soft-start feature limits inrush current at turn-on,
mitigating start-up problems that may result when the
input is supplied by another low-power DC/DC converter.
Battery life is maximized by 40 A operating current, and
1 A shutdown current. Board area is minimized by the
miniature 16-pin narrow SSOP packages and the need for
only three small external capacitors.
*U.S. Patent No.: 5,973,944
V
IN
, LTC and LT are registered trademarks of Linear Technology Corporation.
1 F
®
SIM Power Supply and
2.2 F
1555L provides power conversion and level
CLK
RST
I/O
V
I
GND
VCC
CC
SIM
10mA
U
IN
pin.
Level Translator
1555L TA01
*
ACTUAL V
DEPEND ON OUTPUT
CURRENT IN THIS MODE
OUTPUT VOLTAGE
V
V
V
MODES
CC
CC
CC
* = V
CC
= 3V
= 5V
WILL
IN
LTC1555L
1
CC

Related parts for LTC1555LEGN-1.8

LTC1555LEGN-1.8 Summary of contents

Page 1

... Battery life is maximized operating current, and 1 A shutdown current. Board area is minimized by the miniature 16-pin narrow SSOP packages and the need for only three small external capacitors. , LTC and LT are registered trademarks of Linear Technology Corporation. *U.S. Patent No.: 5,973,944 GSM Cellular Telephone SIM Interface V ...

Page 2

... C = 1MHz 0V, DATA < I < 10mA VCC M0 2.6V < V < M0 2.7V < V < Shorted to GND ORDER PART NUMBER 16 CLK 15 RST LTC1555LEGN 14 I PART MARKING – GND 1555L = 150 C 1.425V to 4.4V, controller digital pins tied to CC MIN TYP MAX 2.6 6 1.425 4.4 1 ...

Page 3

... V Discharge Time Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LTC1555LEGN is guaranteed to meet performance specifications from Specifications over the – The denotes the specifications which apply over the full operating = 2.6V to 6V, DV ...

Page 4

LTC1555L W U TYPICAL PERFOR A CE CHARACTERISTICS VIN 0mA VCC ...

Page 5

PIN FUNCTIONS N/C (Pin 6): No Internal Connection. M1 (Pin 7): Mode Control Bit 1 (see Table 1). M0 (Pin 8): Mode Control Bit 0 (see Table 1). GND (Pin 9): Ground for Both the SIM and ...

Page 6

LTC1555L U U APPLICATIO S I FOR ATIO The LTC1555L performs the two primary functions nec- essary for low voltage controllers (e.g., GSM cellular telephone controllers, smart card readers, etc.) to com- municate with 5V SIMs or smart cards. The ...

Page 7

... Figure 1a. Level Translator Connections for Bidirectional Controller DATA Pin 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. W ...

Page 8

... GND 1555L TA01a 0.189 – 0.196* (4.801 – 4.978) 0.009 (0.229 REF 0.150 – 0.157** (3.810 – 3.988 0.004 – 0.0098 (0.102 – 0.249) 0.0250 (0.635) BSC GN16 (SSOP) 1098 = 1555lf LT/TP 0601 2K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2000 OUT ...

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