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參數(shù)資料
| 型號： | HC5549IM |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 模擬傳輸電路 |
| 英文描述： | THERMISTOR PTC1KOHM 70 DEG 0805 |
| 中文描述： | TELECOM-SLIC, PQCC28 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大小： | 87K |
| 代理商： | HC5549IM |
4-81
Pinouts
HC5549 (PLCC)
TOP VIEW
Ordering Information (PLCC Package Only)
PART NUMBER
48V
BAT
SW
POL
REV
RING
DELAY
DRIVER
2W
LOOP
BACK
LB = 53dB
TEMP.
RANGE
o
C
PACKAGE
PACKAGE
NO.
HC5549CM
0 to 70
28 Ld PLCC
N28.45
HC5549IM
-40 to 85
28 Ld PLCC
N28.45
Device Operating Modes
OPERATING MODE
F2
F1
F0
E0 = 1
E0 = 0
DESCRIPTION
Low Power Standby
0
0
0
SHD
GKD
MTU compliant standby mode with active loop
detector.
Forward Active
0
0
1
SHD
GKD
Forward battery loop feed.
Unused
0
1
0
n/a
n/a
Reserved internal test mode.
Reverse Active
0
1
1
SHD
GKD
Reverse battery loop feed.
Ringing
1
0
0
RTD
RTD
Enabler internal ring trip detector.
Unused
1
0
1
n/a
n/a
Reserved internal test mode.
Unused
1
1
0
n/a
n/a
Reserved internal test mode.
Power Denial
1
1
1
n/a
n/a
Device shutdown.
R
I
RTD
CDC
VRX
V
P
N
N
R
-IN
VFB
V
CC
VTX
B
2
T
SW-
E0
D
A
A
SW+
V
3
V
4
SWC
F2
F1
F0
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
19
20
21
22
23
24
25
26
27
28
HC5549
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