ATTL7554BP 查看數據表（PDF） - Agere -> LSI Corporation
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ATTL7554BP Datasheet PDF : 28 Pages
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Data Sheet
March 1997
L7554 Low-Power SLIC
Recommended Operating Conditions
Parameter
Min
Typ
Max
Unit
Ambient Temperature
–40
—
85
°C
VCC Supply Voltage
4.75
5.0
5.25
V
VBAT Supply Voltage:
L7554AP
L7554BP
V
–24
–40
–60
–24
–48
–72
V
Loop Closure Threshold-detection Programming Range
—
10
ILIM
mA
dc Loop Current-limit Programming Range
5
40
45
mA
On- and Off-hook 2-wire Signal Level
—
1
2.2
Vrms
ac Termination Impedance Programming Range
150
600
1300
Ω
Electrical Characteristics
Minimum and maximum values are testing requirements. Typical values are characteristic of the device and are the
result of engineering evaluations. Typical values are for information purposes only and are not part of the testing
requirements. Minimum and maximum values apply across the entire temperature range (–40 °C to +85 °C) and
the entire battery range unless otherwise specified. Typical is defined as 25 °C, VCC = 5.0 V, VBAT = –48 V, and
ILIM = 40 mA. Positive currents flow into the device. Test circuit is Figure 4 unless noted.
Table 4. Power Supply
Parameter
Min
Power Supply—Powerup, No Loop Current
ICC
—
IBAT (VBAT = –48 V)
—
Power Dissipation (VBAT = –48 V)
—
Power Supply—Low-Power Scan, Forward Bat, No Loop
Current
ICC
—
IBAT (VBAT = –48 V)
—
Power Dissipation (VBAT = –48 V)
—
Power Supply Rejection 500 Hz to 3 kHz
(See Figures 5, 6, 15, and 16.)1
VCC
35
VBAT
45
Thermal Protection Shutdown (Tjc)
—
Thermal Resistance, Junction to Ambient (θJA)
—
Typ
4.1
–3.0
165
2.7
–1.4
82
—
—
175
47
1. This parameter is not tested in production. It is guaranteed by design and device characterization.
Max
Unit
4.8
mA
–3.5
mA
191
mW
3.7
mA
–1.7
mA
100
mW
—
dB
—
dB
—
°C
—
°C/W
Lucent Technologies Inc.
7
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