LTC1555LEGN-1.8#TRPBF Linear Technology, LTC1555LEGN-1.8#TRPBF Datasheet - Page 7

• Manufacturer Part Number: LTC1555LEGN-1.8#TRPBF
• Description: IC LEVEL TRANSLATOR 16-SSOP
• Manufacturer: Linear Technology

Specifications of LTC1555LEGN-1.8#TRPBF

• 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: Lead free / RoHS Compliant
• Data Rate: -

APPLICATIO S I FOR ATIO
open drain (all SIM I/O pins are open drain). Internal
pull-up resistors are provided for both the DATA pin and
the I/O pin on the SIM side. The second method is to use
the DDRV pin to send data to the SIM and use the DATA pin
to receive data from the SIM. When the DDRV pin is not
used, it should either be left floating or tied to DV
Shutting Down the DV
To conserve power, the DV
while the V
is forced below 1.2V, an undervoltage lockout circuit
DATA TO/FROM SIM
CONTROLLER
Figure 1a. Level Translator Connections for
Bidirectional Controller DATA Pin
IN
RST TO SIM
CLK TO SIM
SIDE
supply is still active. When the DV
U
CC
Supply
U
CIN
RIN
DATA
DDRV
DV
CC
LTC1555L
CC
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.
supply may be shut down
CLK
RST
V
I/O
CC
W
SIM SIDE
1555L F01a
U
CC
CC
supply
.
forces the LTC1555L into shutdown mode regardless of
the status of the M0-M1 pins.
10kV ESD Protection
All pins that connect to the SIM (CLK, RST, I/O, V
withstand over 10kV of human body model ESD. In order
to ensure proper ESD protection, careful board layout is
required. The GND pin should be tied directly to a GND
plane. The V
the V
CC
DATA FROM SIM
CONTROLLER
Figure 1b. Level Translator Connections for
One-Directional Controller Side DATA Flow
pin and tied immediately to the GND plane.
DATA TO SIM
CLK TO SIM
RST TO SIM
SIDE
CC
capacitor should be located very close to
CIN
RIN
DATA
DDRV
DV
LTC1555L
CC
RST
CLK
V
I/O
CC
LTC1555L
SIM SIDE
1555L F01b
CC
, GND)
7