821621JG IDT, Integrated Device Technology Inc, 821621JG Datasheet - Page 19

• Manufacturer Part Number: 821621JG
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 821621JG

• Number Of Channels: 1
• On-hook Transmission: Yes
• Polarity Reversal: No
• On-chip Ring Relay Driver: Yes
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temp Range: -40C to 85C
• Package Type: PLCC
• Operating Temperature Classification: Industrial
• Pin Count: 32
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

IDT821621
Test Circuits
R
L
Figure 11 Four-to-Two Wire Gain and Four-to-Four Wire Gain
R
V
L
AB
Gain 4-2 = 20 log (V
Gain 4-4 = 20 log (VTX / V
A (TIP)
B (RING)
Figure 12 Loop Detector Switching
A (TIP)
B (RING)
SLIC
SLIC
VCC
17
AGND
AB
RSN
VTX
/ V
DET
RX
RX
)
)
6.2 kΩ
R
T
R
RX
V
RX
15 pF
LONG HAUL SLIC
October 8, 2003