HI-1573PSIF Holt Integrated Circuits, HI-1573PSIF Datasheet - Page 6

• Manufacturer Part Number: HI-1573PSIF
• Manufacturer: Holt Integrated Circuits

Specifications of HI-1573PSIF

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.15V
• Operating Supply Voltage (max): 3.45V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Lead Free Status / Rohs Status: Compliant

THERMAL CHARACTERISTICS
HEAT SINK - ESOIC & CHIP-SCALE
PACKAGE
Both the HI-1573PSI/T/M and HI-1574PSI/T/M use a 20-
pin thermally enhanced SOIC package. The HI-
1573PCI/T/M and HI-1574PCI/T/M use a plastic chip-
scale package (QFN). These packages include a metal
heat sink located on the bottom surface of the device.
This heat sink should be soldered down to the printed
circuit board for optimum thermal dissipation. The heat
sink is electrically isolated and may be soldered to any
convenient power or ground plane.
Data taken at VDD=3.3V, continuous transmission at 1Mbit/s, single transmitter enabled.
TXINHA/B
HI-1573PSI / T / M
HI-1574PSI / T / M
HI-1573CDI / T / M
HI-1574CDI / T / M
HI-1573PCI / T / M
HI-1574PCI / T / M
PART NUMBER
35
TXA/B
TXA/B
W
(.5 Zo)
TRANSMITTER
enhanced plastic SOIC
(.75 Zo)
(.75 Zo)
52.5
52.5
scale package (QFN)
Figure 3. Transformer Coupled Test Circuits
44-pin Plastic chip-
PACKAGE STYLE
20-pin Thermally
side-brazed DIP
20-pin Ceramic
W
W
(ESOIC)
BUSA/B
BUSA/B
Transformer
Coupling
HOLT INTEGRATED CIRCUITS
1.4:1
HI-1573, HI-1574
Transformer
Isolation
1:1.79
Point
CONDITION
“A ”
unsoldered
unsoldered
Heat sink
Heat sink
Socketed
Heat sink
soldered
T
Transformer
6
Isolation
APPLICATIONS NOTE
Holt Applications Note AN-500 provides circuit design
notes regarding the use of Holt's family of MIL-STD-1553
transceivers. Layout considerations, as well as
recommended interface and protection components are
included.
1.79:1
Point
“A ”
T
Transformer
Coupling
1:1.4
54°C/W
47°C/W
62°C/W
49°C/W
RXENA/B
Ø
JA
T
RECEIVER
JUNCTION TEMPERATURE
A
(.75 Zo)
(.75 Zo)
52°C
49°C
56°C
52.5
52.5
50°C
=25°C
W
W
T
112°C
109°C
116°C
110°C
A
=85°C T
35
RXA/B
RXA/B
W
(.5 Zo)
A
152°C
149°C
156°C
150°C
=125°C