le75183 Zarlink Semiconductor, le75183 Datasheet - Page 6

• Manufacturer Part Number: le75183
• Description: Line Card Access Switch
• Manufacturer: Zarlink Semiconductor

Pin Descriptions .
D: Internally 75 kΩ typical pull down.
U: Internally 75 kΩ typical pull up.
INTESTOUT
Pin Name
INTESTIN
RTESTout
R
T
TTESTout
RTESTin
TTESTin
INRING
LATCH
RINGING
RINGING
D
R
EPAD
F
T
R
V
T
T
V
NC
GND
LINE
GND
LINE
BAT
BAT
BAT
SD
DD
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Ground
Ground
Battery
Power
Type
Input
Input
Input
Input
—
—
Digital ground.
Fault ground.
Logic level switch input control. Internally 75 k
Logic level switch input control. Internally 75 k
Logic level switch input control. Internally 75 k
Data input control, active-high, transparent low. Internally 75 k
No connection.
Connect to RING on SLIC side.
Connect to RING on line side.
Connect to ringing generator.
Test (in) access on RING.
Test (out) access on RING.
Connect to TIP on SLIC side.
Connect to TIP on line side.
Connect to return ground for ringing generator.
Test (in) access on TIP.
Test (out) access on TIP.
Temperature shutdown pin. Can be used as a logic level input or an output. See Tables 12
and 13, Truth Tables, and the Switching Behavior section of this data sheet for input pin
description. As an output flag, will read HIGH when the device is in its operational mode
and LOW in the thermal shutdown mode. To disable the thermal shutdown mechanism, tie
this pin to HIGH (not recommended)
Battery voltage. Used as a reference for protection circuit.
5 V supply.
Exposed pad in QFN package. No internal electrical connection. Not recommended to
make any external electrical connection (such as VBAT or ground) to the EPAD.
Zarlink Semiconductor Inc.
6
Description
Ω
Ω
Ω
typical pull up.
typical pull down.
typical pull up.
Ω
typical pull down.