HC5517_00 Datasheet, PDF (17/19 Pages) Intersil Corporation – 3 REN Ringing SLIC For ISDN Modem/TA and WLL

HC5517
Application Pin Descriptions (Continued)
PLCC
28
SYMBOL
RTI
DESCRIPTION
Ring Trip Input - This pin is connected to the external negative peak detector output for ring trip detection.
Pinouts
HC5517 (PLCC)
TOP VIEW
4 3 2 1 28 27 26
F0 5
25 ^TF
RS 6
24 VRING
SHD 7
23 NU
RTD 8
22 BGND
TST 9
21 ^RDO
ALM 10
20 ^RDI
ILMT 11
19 V_TX
12 13 14 15 ₁₆ 17 ₁₈
HC5517 (SOIC)
TOP VIEW
AGND 1
V_CC 2
VREF 3
F1 4
F0 5
RS 6
SHD 7
RTD 8
TST 9
ALM 10
ILMT 11
OUT 1 12
-IN 1 13
TIP SENSE 14
28 RTI
27 V_BAT
26 RF
25 TF
24 VRING
23 NU
22 BGND
21 RDO
20 RDI
19 V_TX
18 NU
17 V_RX
16 RING SENSE 2
15 RING SENSE 1
Applications Circuit
17