LUCL7585FP-D AGERE [Agere Systems], LUCL7585FP-D Datasheet - Page 5

• Manufacturer Part Number: LUCL7585FP-D
• Description: Full-Feature,Low-Power SLIC and Switch
• Manufacturer: AGERE [Agere Systems]

September 2001
Agere Communications Inc.
Pin Information
Table 1. Pin Descriptions
Note: On the printed-wiring board (PWB), make the leads to BGND and V
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
imize the amount of PWB copper on all leads connected to this device for the lowest operating temperature.
Symbol Type
DC
BGND
DGND
RRNG
NDET
LCTH
I
RSW
DCR
RDO
V
NCS
V
V
CLK
RTS
CF2
CF1
FB2
FB1
PROG
V
PR
CCA
BAT
BAT
SP
OUT
I/O
I/O
I/O
—
—
—
—
—
—
O
O
O
O
I
I
I
I
I
I
I
I
I
(continued)
+5 V Analog dc Supply. +5 V supply for analog circuitry.
Loop Closure Threshold Input. Connect a resistor to DC
old.
Current-Limit Program Input. A resistor to DC
dc Output. This output is a voltage that is directly proportional to the differential
tip/ring current.
dc Resistance. Ground for dc feed resistance of 180
termediate values can be set with a resistor divider from DC
is connected to DCR.
Filter Capacitor 2. Connect a 0.1 µF, 100 V capacitor from this pin to AGND and a
0.22 µF, 100 V capacitor from this pin to pin CF1.
Filter Capacitor 1. Connect a 0.22 µF, 100 V capacitor from this pin to pin CF2.
Forward Battery Slowdown 2. A capacitor from FB1 to AGND and from FB2 to AGND
will ramp the polarity reversal transition when quiet polarity reversal is required. If not
needed, the pin can be left open.
Forward Battery Slowdown 1. A capacitor from FB1 to AGND and from FB2 to AGND
will ramp the polarity reversal transition when quiet polarity reversal is required. If not
needed, the pin can be left open.
Battery Ground. Ground return for the battery (V
Battery Supply. Negative high-voltage power supply.
Battery Supply. Negative high-voltage power supply.
+10 V Supply. +10 V bias supply for switch circuitry.
Not Channel Select. A low-to-high transition on this logic input stores the data on pins
B0—B5 into the input latches on the SLIC. When NCS is either high or low, the SLIC is
unaffected by data on pins B0—B5.
Clock. Clock input.
Not Detect. When low, this logic output indicates either a ring trip or an off-hook condition,
depending on the input state of the SLIC. If either the BCDMOS portion or CBIC portion
of this device enters thermal shutdown, NDET will be forced low.
Digital Ground. Ground return for V
Relay Driver. This output drives an external relay. RDO is low (relay operated) when a
low input on B5 is latched into the SLIC.
Ring Trip Sense. Sense input for the ring trip detector.
Ring Lead Ringing Access Switch. Ringing relay connects this pin to pin RRNG. Con-
nect this pin to pin PR through a 500
Ring Lead Ringing Supply. Connect this pin to the ringing supply.
Protected Ring. The output of the ring driver and input to the transmit current sense cir-
cuit. Connect to the ring of the loop through overvoltage protection.
L7585F Full-Feature, Low-Power SLIC and Switch
BAT
Name/Function
CCD
as wide as possible for thermal and electrical reasons. Also, max-
current-limiting resistor.
and relay driver flyback current.
OUT
BAT
sets the dc current limit.
) supply.
, or short to DC
OUT
OUT
to ground, the tap of which
to set the off-hook thresh-
OUT
for 600
. In-
5