HI-1567CDM HOLTIC [Holt Integrated Circuits], HI-1567CDM Datasheet - Page 6

• Manufacturer Part Number: HI-1567CDM
• Description: 5V MONOLITHIC DUAL TRANSCEIVERS
• Manufacturer: HOLTIC [Holt Integrated Circuits]

THERMAL CHARACTERISTICS
HEAT SINK - ESOIC PACKAGE
Both the HI-1567PSI/T and HI-1568PSI/T use a 20-pin
thermally enhanced SOIC package. The package
includes a metal heat sink located on the bottom surface
of the device. This heat sink should be soldered down to
RADIATION TOLERANCE
The HI-1567 has been characterized for total dose
radiation performance in accordance with MIL-STD-883
method 1019. The part meets all data sheet parameters
after exposure to 25 KRad(Si).
TXINHA/B
Data taken at VDD=5.0V, continuous transmission at 1Mbit/s, single transmitter enabled.
35
HI-1567PSI / T / M
HI-1568PSI / T / M
HI-1567CDI / T / M
HI-1568CDI / T / M
HI-1567PCI / T
HI-1568PCI / T
PART NUMBER
TXA/B
TXA/B
W
(.5 Zo)
TRANSMITTER
(.75 Zo)
(.75 Zo)
52.5
52.5
Figure 3. Transformer Coupled Test Circuits
44-pin Plastic chip-
PACKAGE STYLE
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-1567, HI-1568
Transformer
Isolation
CONDITION
1:1.79
unsoldered
unsoldered
Heat sink
Heat sink
Socketed
Heat sink
soldered
Point
“A ”
T
Transformer
6
Isolation
the printed circuit board for optimum thermal dissipation.
The heat sink is electrically connected to the VDD supply
of the chip and therefore must be isolated from all other
signals.
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
54°C/W
47°C/W
62°C/W
49°C/W
Coupling
1:1.4
Ø
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
RXA/B
RXA/B
W
A
162°C
157°C
169°C
159°C
=125°C
(.5 Zo)