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HS-248RH の電気的特性と機能

HS-248RHのメーカーはIntersil Corporationです、この部品の機能は「Radiation Hardened Triple Line(party-Line) Transmitter」です。


製品の詳細 ( Datasheet PDF )

部品番号 HS-248RH
部品説明 Radiation Hardened Triple Line(party-Line) Transmitter
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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HS-248RH Datasheet, HS-248RH PDF,ピン配置, 機能
Data Sheet
HS-245RH, HS-246RH, HS-248RH
August 1999 File Number 3034.2
HS-245RH
HS-246RH
HS-248RH
Radiation Hardened Triple
Line Transmitter
Radiation Hardened Triple
Line Receiver
Radiation Hardened Triple
Party-Line Receiver
The HS-245RH/246RH/248RH radiation hardened triple line
transmitter and triple line receivers are fabricated using the
Intersil dielectric isolation process. These parts are identical in
pinout and function to the original HD-245/246/248. They are
also die size and bond pad placement compatible with the
original parts for those customers who buy dice for hybrid
assembly.
Each transmitter-receiver combination provides a digital
interface between systems linked by 100twisted pair,
shielded cable. Each device contains three circuits
fabricated within a single monolithic chip. Data rates greater
than 15MHz are possible depending on transmission line
loss characteristics and length.
The transmitter employs constant current switching which
provides high noise immunity along with high speeds, low
power dissipation, low EMI generation and the ability to
drive high capacitance loads. In addition, the transmitters
can be turned “off” allowing several transmitters to time-
share a single line.
Receiver input/output differences are shown in the table:
PART NO.
HS-246RH
HS-248RH
INPUT
100
Hi-Z
OUTPUT
Open Collector
6K Pull-Up Resistors
The internal 100cable termination consists of 50from
each input to ground.
HS-248RH ‘‘party line’’ receivers have a Hi-Z input such that
as many as ten of these receivers can be used on a single
transmission line.
Each transmitter input and receiver output can be connected to
TTL and DTL systems. When used with shielded transmission
line, the transmitter-receiver system has very high immunity to
capacitance and magnetic noise coupling from adjacent
conductors. The system can tolerate ground differentials of
-2.0V to +20.0V (transmitter with respect to receiver).
Specifications for Rad Hard QML devices are controlled
by the Defense Supply Center in Columbus (DSCC). The
SMD numbers listed here must be used when ordering.
Detailed Electrical Specifications for these devices are
contained in SMD 5962-96722 and 5962-96723. A “hot-
link” is provided on our homepage for downloading.
http://www.intersil.com/spacedefense/space.htm
Features
• Electrically Screened to SMD # 5962-96722 and 5962-
96723
• QML Qualified per MIL-PRF-38535 Requirements
• Radiation Hardened DI Processing
- Total Dose (γ) . . . . . . . . . . . . . . . . . . . 2 x 105 RADs(Si)
- Latchup Free
- Neutron Fluence . . . . . . . . . . . . . . . . . 5 x 1012 N/cm2
• Replaces HD-245/246/248
• Current Mode Operation
• High Speed with 50 Foot Cable . . . . . . . . . . . . . . . 15MHz
High Speed with 1000 Foot Cable . . . . . . . . . . . . . . 2MHz
• High Noise Immunity
• Low EMI Generation
• Low Power Dissipation
• High Common Mode Rejection
• Transmitter and Receiver Party Line Capability
• Tolerates -2.0V to +20.0V Ground Differential (Transmitter
with Respect to Receiver)
• Transmitter Input/Receiver Output TTL/DTL Compatible
Ordering Information
ORDERING NUMBER
INTERNAL
MKT. NUMBER
TEMP. RANGE
(oC)
5962R9672201QCC HS1-245RH-8
-55 to 125
5962R9672201QXC HS9-245RH-8
-55 to 125
5962R9672201VCC HS1-245RH-Q
-55 to 125
5962R9672201VXC
HS9-245RH-Q
-55 to 125
HS9-245RH/PROTO HS9-245RH/PROTO
-55 to 125
5962R9672301QCC HS1-246RH-8
-55 to 125
5962R9672301QXC HS9-246RH-8
-55 to 125
5962R9672301VCC HS1-246RH-Q
-55 to 125
5962R9672301VXC
HS9-246RH-Q
-55 to 125
5962R9672302QCC HS1-248RH-8
-55 to 125
5962R9672302QXC HS9-248RH-8
-55 to 125
5962R9672302VCC HS1-248RH-Q
-55 to 125
5962R9672302VXC
HS9-248RH-Q
-55 to 125
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
www.intersil.com or 321-724-7143 | Copyright © Intersil Corporation 1999

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HS-248RH pdf, ピン配列
HS-245RH, HS-246RH, HS-248RH
Test Circuits and Applications (Continued)
+5V
IN
1/3
HS-245RH
+5V
(+) 1/3 HS-246RH
50
50
(-)
RECEIVER
OUT
ENABLE
(NOTE)
(+)
NOTE: HS-245RH should be driven by open-collector
gates. (Totem-pole output may cause slight reduction in
“on” data current). For more detailed information, refer to
Design Information section of this data sheet.
(-)
FIGURE 3. TYPICAL APPLICATION
+5V
-5V
“PARTY-LINE”
RECEIVER
1/3
HS-248RH
-5V
OUTPUT
Voltage Mode Transmission
Data rates of up to 10 million bits per second can be
obtained with standard TTL logic; however, the transmission
distance must be very short. For example, a typical 50 foot
low capacitance cable will have a capacitance of
approximately 750pF which requires a current of greater
than 50mA to drive 5V into this cable at 10MHz; therefore,
voltage mode transmitters are undesirable for long
transmission lines at high data rates due to the large current
required to charge the transmission line capacitance.
Current Mode Transmission
An alternate method of driving high data rates down long
transmission lines is to use a current mode transmitter.
Current mode logic changes the current in a low impedance
transmission line and requires very little change in voltage.
For example, a 2mA change in transmitter current will
produce a 100mV change in receiver voltage independent of
the series transmission line resistance. The rise time at the
receiver for a typical 50 foot cable (750pF) is approximately
30ns for a 2mA pulse.
An emitter coupled logic gate is frequently used for a current
mode transmitter. However, ECL gates are not compatible
with TTL and DTL logic and they require considerable power.
The Intersil HS-245RH is a TTL/DTL compatible current
mode transmitter designed for high data rates on long
transmission lines. Data rates of 15 megabits per second
can be obtained with 50 feet of transmission line when using
the companion HS-246RH receiver. Data rates of 2 megabits
per second are easily obtained on transmission lines as long
as 1,000 feet. The Intersil transmitter and receivers feature
very low power, typically 25mW for the transmitter and
15mW for the receiver.
Intersil Transmitter/Receivers
The Intersil transmitter/receiver family consists of a triple line
transmitter, two triple line receivers with internal terminations
and a triple party-line receiver. The general characteristics of
the transmitter and receivers are outlined in Table A.
3


3Pages


HS-248RH 電子部品, 半導体
HS-245RH, HS-246RH, HS-248RH
the grounded input of the transmitter, and is less than 25V
negative with respect to the transmitter VCC. The current
mode system is totally unaffected by ground differential
noise of +2V at frequencies as high as 1MHz.
Propagation Delay
The worst case propagation delay of a transmitter and
receiver, connected as shown in Figure 6, can be
determined by adding the maximum delay shown on the
data sheet for the transmitter and receiver. These overall
switching characteristics are shown in Table B. For the entire
system, however, the propagation delay of the transmission
line must also be considered. This delay, of course, depends
on the length of the line and the characteristics of the line,
but in general, delays of between 1.5ns and 3.0ns per foot
can be expected.
TABLE B. OVERALL TRANSMITTER/RECEIVER SWITCHING
CHARACTERISTICS
-55oC TO 125oC
HS-245RH, HS-246RH
HS-248RH
CHARACTERISTICS MIN TYP MAX UNITS
Propagation Delay
TPLH
- 18 40 ns
Propagation Delay
TPHL
- 18 40 ns
Duty Cycle Distortion
TPLH - TPHL
- 2 15 ns
NOTE: VCC = +5V, VEE = -5V.
Schematics
14VCC
2.7K 3802.7K
300
2.0K
12
φ1 φ1
IN OUT
2.0K
34
φ2 φ2
IN OUT
56
φ1 φ1
IN OUT
89
φ2 φ2
IN OUT
T1 T2
FIGURE 6. HS-245RH
14VCC
10 11
φ1 φ1
IN OUT
12 13
φ2 φ2
IN OUT
T3
13VCC
(R1) OUTPUT
6K 3
4.1K
6
(R2) OUTPUT
10
(R3) OUTPUT
(R1) +INPUT
2
-INPUT
1
50
2.7K
(R1)
50
GND
7
+INPUT
5
(R2)
12VEE
-INPUT
4
(R2)
+INPUT
9
(R3)
11VEE
-INPUT
8
(R3)
R1 R2
R3
NOTES:
FIGURE 7. HS-246RH, HS-248RH
1. HS-246RH does not have 6K output pull-up resistors.
2. HS-248RH does not have 50input termination resistors.
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部品番号部品説明メーカ
HS-248RH

Radiation Hardened Triple Line(party-Line) Transmitter

Intersil Corporation
Intersil Corporation


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