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參數(shù)資料
| 型號： | T7288 |
| 廠商： | Lineage Power |
| 英文描述： | CEPT/E1 Line Interface(CEPT/E1 線接口) |
| 中文描述： | CEPT/E1線路接口（CEPT/E1線接口） |
| 文件頁數(shù)： | 13/22頁 |
| 文件大?。?/td> | 432K |
| 代理商： | T7288 |
Data Sheet
January 1998
T7288 CEPT/E1 Line Interface
13
Lucent Technologies Inc.
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Handling Precautions
Although protection circuitry has been designed into this device, proper precautions should be taken to avoid expo-
sure to electrostatic discharge (ESD) during handling and mounting. Lucent employs a human-body model (HBM)
and a charged-device model (CDM) for ESD-susceptibility testing and protection design evaluation. ESD voltage
thresholds are dependent on the circuit parameters used to define the model. No industry-wide standard has been
adopted for the CDM. However, a standard HBM (resistance = 1500
, capacitance = 100 pF) is widely used and
therefore can be used for comparison purposes. The HBM ESD threshold presented here was obtained by using
these circuit parameters:
Notes:
P1—0 kV to 5 kV dc power supply.
R1—At least 10 M
, high-voltage, 1 W carbon composition.
RL1—High-voltage (5 kV) relay of a bounceless type (mercury-wetted or equivalent).
C1—100 pF, 5 kV capacitor.
R2—1500
±
5%, 1 W carbon composition < 1 pF shunt capacitance.
Figure 9. Circuit Schematic of Human-Body ESD Simulator
Parameter
Symbol
V
DD
P
D
T
stg
—
—
—
Min
–0.5
—
–65
—
–0.5
–5.0
Max
6.5
500
125
0.5
—
5.0
Unit
V
mW
°
C
V
V
V
dc Supply Voltage
Power Dissipation
Storage Temperature
Maximum Voltage (any pin) with Respect to V
DD
Minimum Voltage (any pin) with Respect to GND
Maximum Allowable Voltages (T1, R1) with Respect to GND
Human-Body Model ESD Threshold
Device
T7288
Voltage
>2500 V
5-2263(C).a
REGULATED
HIGH-VOLTAGE
POWER SUPPLY
P1
R1
RL1
R2
C1
SOCKET
FOR
DEVICE
TESTING
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