HT0638LG Ver la hoja de datos (PDF) - Supertex Inc
Número de pieza
componentes Descripción
Fabricante
HT0638LG Datasheet PDF : 4 Pages
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Typical Performance Curve
ILIMIT vs. RSENSE
350
300
250
200
150
100
50
0
100 200 300 400 500 600 700 800 900 1000
RSENSE (ohms)
Block Diagram
TPG
TP
HKS
LS1
LS2
DP
H = ON
L = OFF
Charge Pump
&
Logic Control
CS
GND
HT0638
Pin Description
TPG
TP
HKS
LS1
LS2
DP
CS
GND
Positive input side of a telephone line, typically Tip side.
Positive output side of a telephone line.
Hookswitch input. Connect HKS to TPG to turn on the electronic switch. Internally pulled low.
Line switch 1 input. Positive input turns on the electronic switch. Internally pulled low.
Line switch 2 input. Positive input turns on the electronic switch. Internally pulled low.
Dial pulse input. A low input turns off the electronic switch. Use for pulse dialing. Internally pulled high.
Current sense input. An external resistor connected between CS and TP sets the current limit. Short CS to TP if
current sensing is not used.
Device ground. Negative side of a telephone line, typically Ring side.
10-7
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