NTE1549 Ver la hoja de datos (PDF) - NTE Electronics
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NTE1549 Datasheet PDF : 4 Pages
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Electrical Characteristics (Cont’d): (Note 3)
Parameter
Test Conditions
Min
Output Drivers
LED Current
V+ = VLED = 5V, IL(REF) = 1mA
7
LED Current Difference (Between Largest and Smallest VLED = 5V, ILED = 2mA
–
LED Currents)
VLED = 5V, ILED = 20mA
–
LED Current Regulation
2V ≤ VLED ≤ 17V, ILED = 2mA
–
2V ≤ VLED ≤ 17V, ILED = 20mA
–
Dropout Voltage
ILED(ON) = 20mA @ VLED = 0.4mA, ∆ILED = 2mA –
Saturation Voltage
ILED = 2mA, IL(REF) = 0.4mA
–
Output Leakage, Each Collector
Bar Mode, Note 5
–
Output Leakage, Pin10 through Pin18
Dot Mode, Note 5
–
Output Leakage, Pin1
60
Supply Current
Standby Supply Current (All Outputs Off)
V+ = +5V, IL(REF) = 0.2mA
–
V+ = +20V, IL(REF) = 1mA
–
Typ Max
10
13
0.12 0.4
1.2
3.0
0.1 0.25
1.0
3.0
–
1.5
0.15 0.4
0.1
100
0.1
100
150 450
2.4
4.2
6.1
9.2
Unit
mA
mA
mA
mA
mA
V
V
µA
µA
µA
mA
mA
Note 3. Unless otherwise stated, all specifications apply with the following conditions:
3VDC ≤ V+ ≤ 20VDC; –0.015V ≤ VRLO ≤ 12VDC; TA = +25°C, IL(REF) = 0.2mA, Pin9 con-
nected to Pin3 bar mode.
3VDC ≤ VLED ≤ V+; VREF, VRHI, VRLO ≤ (V+ –1.5V); For higher power dissipations, pulse
testing is used.
–0.015V ≤ VRHI ≤ 12VDC; 0V ≤ VIN ≤ V+ –1.5V
Note 5. Bar mode results when Pin9 is within 20mV of V+. Dot mode results when Pin9 is pulled at
least 200mV below V+. LED #10 (Pin10 output current) is disabled if Pin9 is pulled 0.9V or
more below VLED.
Threshold Voltage: (Note 4)
dB
3
2 ±1/4
1 ±1/4
0 ±1/4
–1 ±1/2
Min
9.985
8.660
7.718
6.879
5.957
Volts
Typ
10.000
8.913
7.943
7.079
6.310
Max
10.015
9.173
8.175
7.286
6.683
dB
–3 ±1/2
–5 ±1/2
–7 ±1
–10 ±1
–20 ±1
Min
4.732
3.548
2.818
1.995
0.631
Volts
Typ
5.012
3.981
3.162
2.239
0.708
Max
5.309
4.467
3.548
2.512
0.794
Note 4. Accuracy is measured referred to +3dB = +3dB = +10.000VDC at Pin5, with +10.000VDC at
Pin6, and 0.000 VDC at Pin4. At lower full–scale voltages, buffer and comparator offset volt-
age may add significant error.
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