IL74
DUAL CHANNEL ILD74
QUAD CHANNEL ILQ74
SINGLE CHANNEL
PHOTOTRANSISTOR OPTOCOUPLER
FEATURES
• 7400 Series T2L Compatible
• Transfer Ratio, 35% Typical
• Coupling Capacitance, 0.5 pF
• Single, Dual, & Quad Channel
• Industry Standard DIP Package
• Underwriters Lab File #E52744
V
•
VDE Approvals #0884
(Optional with Option 1, Add -X001 Suffix)
Dimensions in inches (mm)
Pin One ID.
The IL74 is an optically coupled pair with a Gallium Arsenide infrared LED and a silicon NPN
phototransistor. Signal information, including a
DC level, can be transmitted by the device while
maintaining a high degree of electrical isolation
between input and output. The IL74 is especially
designed for driving medium-speed logic, where
it may be used to eliminate troublesome gound
loop and noise problems. Also it can be used to
replace relays and transformers in many digital
interface applications, as well as analog applications such as CRT modulation.
1
6 Base
Anode 1
.248 (6.30)
.256 (6.50)
5 Collector
Cathode 2
4
5
6
4 Emitter
NC 3
.335 (8.50)
.343 (8.70)
D E
DESCRIPTION
2
3
.300 (7.62)
typ.
.039
(1.00)
min.
.130 (3.30)
.150 (3.81)
4°
typ.
18° typ.
.020 (.051) min.
.031 (0.80)
.035 (0.90)
.018 (0.45)
.022 (0.55)
.300 (7.62)
.347 (8.82)
.100 (2.54) typ.
4
Pin One I.D.
1
2
3
.110 (2.79)
.150 (3.81)
.010 (.25)
.014 (.35)
Anode
The ILD74 has two isolated channels in a single
DIP package; the ILQ74 has four isolated channels per package.
7
6
8 Emitter
2
7 Collector
Cathode
5
1
Cathode
3
6 Collector
Anode
.268 (6.81)
.255 (6.48)
4
5 Emitter
8
.390 (9.91)
.379 (9.63)
.305 typ.
(7.75) typ.
.045 (1.14) .150 (3.81)
.030 (.76) .130 (3.30)
4°
Typ.
.040 (1.02)
.030 (.76 )
.022 (.56)
.018 (.46)
3°–9°
10 °
Typ.
.135 (3.43)
.115 (2.92)
.012 (.30)
.008 (.20)
.100 (2.54) Typ.
Anode 1
16 Emitter
Cathode 2
15 Collector
Cathode 3
6
5
4
3
2
1
14 Collector
.240 (6.10)
.260 (6.60)
pin one
ID. Anode 4
13 Emitter
Anode 5
7
8
12 Emitter
Cathode 6
9
10
11
12
13
14
15
.780 (19.81)
.800 (20.32)
.040 (1.02)
.050 (1.27)
.048 (1.22)
.052 (1.32)
5–1
Cathode
10 Collector
7
Anode 8
9
Emitter
.300 (7.62)
typ.
.034 (.86)
.130 (3.30)
.150 (3.81)
.280 (7.11)
.330 (8.38)
.014
(.35)
typ.
.016 (.41)
.020 (.51)
16
11 Collector
.033 (.84)
typ.
.020 (.51)
.030 (.76)
.0255 (.65)
typ.
.100 (2.54) typ.
.130 (3.30)
.150 (3.81)
3° to 9°
.008 (.20)
.012 (.31)