HCPL-4200 Avago Technologies US Inc., HCPL-4200 Datasheet - Page 11

• Manufacturer Part Number: HCPL-4200
• Description: OPTOCOUPLER RECEIVER 20MA 8-DIP
• Manufacturer: Avago Technologies US Inc.
• Type: Receiverr

Specifications of HCPL-4200

• Mounting Type: Through Hole
• Voltage - Isolation: 3750Vrms
• Input Type: DC
• Voltage - Supply: 4.5 V ~ 20 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• No. Of Channels: 1
• Isolation Voltage: 3.75kV
• Optocoupler Output Type: Logic Gate
• Input Current: 24mA
• Output Voltage: 20V
• Opto Case Style: DIP
• No. Of Pins: 8
• Propagation Delay: 0.23µs
• Output Type: And
• Package Type: 8-Pin DIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 516-1149-5

Figure 17. Simplex Current Loop System Configurations for (a) Point-to-Point, (b) Multidrop.
A recommended non-isolated active transmitter circuit
which can be used with the HCPL-4200 in point-to-point
or in multidrop 20 mA current loop applications is given
in Figure 18. The current source is controlled via a stan-
dard TTL 7407 buffer to provide high output impedance
of current source in both the ON
and OFF states. This non-isolated active transmitter pro-
vides a nominal 20 mA loop current for the listed values
of V
Length of current loop (one direction) versus minimum
required DC supply voltage, V
is graphically illustrated in Figure 19. Multidrop configu-
rations will require larger V
order to account for additional station terminal voltage
drops.
11
CC
, R2 and R3 in Figure 18.
CC
CC
than Figure 19 predicts in
, of the circuit in Figure 18
Typical data rate performance versus distance is illus-
trated in Figure 20 for the combination of a non-isolated
active transmitter and HCPL-4200 optically coupled cur-
rent loop receiver shown in Figure 18. Curves are shown
for 10% and 25% distortion data rate. 10% (25%) distor-
tion data rate is defined as that rate at which 10% (25%)
distortion occurs to output bit interval with respect to
input bit interval. An input Non-Return-to-Zero (NRZ)
test waveform of 16 bits (0000001011111101) was used
for data rate distortion measure ments. Data rate is inde-
pendent of current source supply voltage, V
The cable used contained five pairs of unshielded, twist-
ed, 22 AWG wire (Dearborn #862205). Loop current is 20
mA nominal. Input and output logic supply voltages are
5 V dc.
CC
.