hi-1566pst Holt Integrated Circuits, Inc., hi-1566pst Datasheet - Page 6

• Manufacturer Part Number: hi-1566pst
• Description: 5v Monolithic Dual Transceivers
• Manufacturer: Holt Integrated Circuits, Inc.

HEAT SINK - ESOIC & CHIP-SCALE PACKAGE
Both the HI-1565PSI/T/M and HI-1566PSI/T/M use a
20-pin thermally enhanced SOIC package. The
HI-1565PCI/T and HI-1566PCI/T use a plastic chip-scale
package. These packages include a metal heat sink
located on the bottom surface of the device. This heat
THERMAL CHARACTERISTICS
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.
TXINHA/B
Data taken at VDD=5.0V, continuous transmission at 1Mbit/s, single transmitter enabled.
35
HI-1565PSI / T / M
HI-1566PSI / T / M
HI-1565CDI / T / M
HI-1566CDI / T / M
HI-1565PCI / T
HI-1566PCI / T
PART NUMBER
TXA/B
TXA/B
W
(.5 Zo)
TRANSMITTER
(.75 Zo)
(.75 Zo)
52.5
52.5
44-pin Plastic chip-
PACKAGE STYLE
Figure 3. Transformer Coupled Test Circuits
enhanced plastic
20-pin Thermally
side-brazed DIP
20-pin Ceramic
SOIC (ESOIC)
scale package
W
W
BUSA/B
BUSA/B
Transformer
Coupling
HOLT INTEGRATED CIRCUITS
1.4:1
HI-1565, HI-1566
Transformer
Isolation
CONDITION
1:1.79
unsoldered
unsoldered
Heat sink
Heat sink
Socketed
Heat sink
soldered
Point
“A ”
T
Transformer
6
Isolation
sink should be soldered down to the printed circuit board
for optimum thermal dissipation.
electrically isolated and may be soldered to any
convenient power or ground plane..
1.79:1
Point
“A ”
T
Transformer
54°C/W
47°C/W
62°C/W
49°C/W
Coupling
Ø
1:1.4
JA
RXENA/B
T
JUNCTION TEMPERATURE
A
62°C
57°C
69°C
59°C
=25°C
RECEIVER
(.75 Zo)
(.75 Zo)
52.5
52.5
W
W
T
122°C
117°C
129°C
119°C
A
=85°C T
35
The heat sink is
RXA/B
RXA/B
W
A
162°C
157°C
169°C
159°C
=125°C
(.5 Zo)