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參數(shù)資料
| 型號： | HT18LG |
| 廠商： | SUPERTEX INC |
| 元件分類： | 路由/交換 |
| 英文描述： | Electronic Telephone Line Switch |
| 中文描述： | TELECOM, DIGITAL TIME SWITCH, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數(shù)： | 3/3頁 |
| 文件大小： | 76K |
| 代理商： | HT18LG |
3
Block Diagram
TPG
TP
CS
GND
HKS
LS
DP
H = ON
L = OFF
Charge Pump
&
Logic Control
(1)
(2)
(5)
(6) for HT18
(6) for HT19
(8)
(7)
(3)
DP
Pin Description
Pin # Symb
Description
1
TPG
Positive input side of a telephone line, typically Tip side.
2
HKS
Hookswitch input. Connect HKS to TPG to turn on the hook switch. Internally pulled low with a high value resistor.
3
GND
Device ground. Negative side of a telephone line, typically Ring side.
4
NC
No Connect. Open Circuit. No internal connections to the device.
5
LS
Line switch input. Input logic high turns on the hook switch. Internally pulled low with a high value resistor.
6
DP
For HT18. Dial pulse input. Input logic high turns off the hook switch. Used for pulse dialing. Internally pulled low with a
high value resistor.
6
DP
For HT19. Dial pulse input. Input logic low turns off the hook switch. Used for pulse dialing. Internally pulled high with a
high value resistor.
7
CS
Current sense input. An external resistor connected between CS and TP sets the current limit.
8
TP
Positive output side of a telephone line. Zener protection to prevent this output from rising above 18V is required.
HT18/HT19
Typical Application Circuit
Tip
Ring
Transient
Protection
TPG
HKS
GND
DP/DP
LS
CS
R
SEN
15V
HT18
or
HT19
Telecom
Circuit
TP
1235 Bordeaux Drive, Sunnyvale, CA 94089
TEL: (408) 744-0100 FAX: (408) 222-4895
www.supertex.com
12/13/010
2001 Supertex Inc. All rights reserved. Unauthorized use or reproduction prohibited.
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| HT18LG-G | 功能描述:電信集成電路 350V RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
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