NATIONAL HYBRID, INC.
2200 Smithtown Avenue, Ronkonkoma, NY 11779
(516) 981-2400 516-981-8888
Mil-Std-1553 Products
NHI-1530 Series
+5V Hybrid Dual Transceivers
Features:
Compliant to Mil-Std-1553A & B
Single +5V +/- 10% Supply
Very Low Standby Power
Short Circuit Proof
Superior Noise Performance
Description:
The NHI-1530 series of Mil-Std-1553 hybrid dual
transceivers are available in 1.900" x .780", 36 pin
plug-in and flatpack packages. It operates off of a
single +5V power supply with very low standby power
dissipation.
Each receiver converts the 1553 bus bi-phase data to
complementary RX and RX_L TTL digital outputs
for use by the manchester decoder. The device
provides independent receiver enables for each
channel.
The transmitters will output bi-phase manchester to
the coupling transformer when the TX and TX_L
inputs are driven by complementary TTL digital data.
The device provides an independent transmitter
inhibit TXINH for each channel.
+5V
TRANSMITTER
TX
TX
Transmit
TX_L
TXINH
Logic
TXOUT
1553
Data Bus
Isolation
Transformer
Coupler Box
Direct
Or
Transformer
Shaping
Network
TXOUT_L
RECEIVER
RX
RX
Receive
RX_L
Logic
RXENA
Comparator
Filter
RXIN
RX
Input
RXIN_L
Figure I: NHI-1530 Block Diagram
(Each Channel)
NHI-1530 Series
TABLE I: Electrical Specifications
Parameter
POWER SUPPLY
REQUIREMENT
TOTAL SUPPLY CURRENT
Vcc=5.0V, Not Transmitting
Vcc=5.0V, Transmit one channel @
50% duty cycle
Vcc=5.0V, Transmit one channel @
100% duty cycle
POWER DISSIPATION
Vcc=5.0V, Not Transmitting
Vcc=5.0V, Transmit one channel @
100% duty cycle
OPERATING
TEMPERATURE
Junction
Case
Storage
THERMAL IMPEDANCE
Junction to Case (Hottest Die)
Condition
Symbol
Vcc
Icc1
Icc2
Icc3
Pd1
Pd2
Tj
Tc
Ts
Min
4.7
Typ
Max
5.5
Units
V
mA
mA
mA
W
W
30
285
535
40
330
600
0.5
0.95
-55
-55
-55
175
125
165
38.6
°
C
°
C
°
C
°
C/W
mA
θ
jc
Iil
LOGIC I/O
RXENA_A, TXA, TXA_L,
TXINH_A, RXENA_B, TXB,
TXB_L, TXINH_B
RXA, RXA_L, RXB, RXB_L
Vcc= 5.5V, Vil= 0.0V
-0.8
Vcc= 4.5V, Vih= 2.7V
Vcc= 5.5V, Iol= -4mA
Vcc= 4.5V, Ioh= 400 uA
Iih
Vol
Voh
2.4
40
0.4
uA
V
V
k
Ω
RECEIVER
Input Resistance
Input Capacitance
Common Mode Rejection Ratio
Input Level
Differential
Across 35
Ω
load
10% to 90% of peak to peak output
Across 35
Ω
load
Differential
Differential, not transmitting
Differential
Differential
Rin
Cin
CMRR
Vin
40
40
10
5
pF
dB
Vpp
TRANSMITTER
Output Voltage
Rise/Fall Time
Output Dynamic Offset Voltage
Output Noise
Output Resistance
V
out
t
r
, t
f
Vdyn
Vnpp
Rout
10
6
100
-90
7.5
150
9
300
90
10
Vpp
nS
mV
mVpp
k
Ω
NHI-1530 Series
Table II: Pin Functions
Pin#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Function
TXOUT_A
TXOUT_A_L
GND_A
NC
RXA
RXENA_A
GND_A
RXA_L
NC
TXOUT_B
TXOUT_B_L
GND_B
NC
RXB
RXENA_B
GND_B
RXB_L
NC
Pin#
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
Function
TXA_L
TXA
TXINH_A
+5V_A
NC
GND_A
RXIN_A_L
RXIN_A
NC
TXB_L
TXB
TXINH_B
+5V_B
NC
GND_B
RXIN_B_L
RXIN_B
NC
TXOUT_L
RXIN
RXIN_L
RXIN
RXIN_L
TXOUT_L
Transformer Requirements:
The NHI-1530 series requires a transformer with a turns
ratio of 1:2.12 for Direct Coupling, and a turns ratio of
1:1.5 for Transformer Coupling to the Mil-Std-1553 Bus.
Technitrol part number Q1553-5 or equivalent is
recommended. The center tap on the transceiver side of
the isolation transformer must be grounded.
TRANSFORMER COUPLED
NHI-1530
TXOUT
Zo
1:1.5
1:1.4
.75Zo
.75Zo
NHI-1530
TXOUT
DIRECT COUPLED
1:2.12
55
55
Zo
Figure II: BUS Connections
A
B
36
TOP VIEW
18
1
1
A
B
H
19
DC
TOP VIEW
C
36
19
18
E
F
G
F
G
D
E
Figure III: Plug-In Package Detail
Figure IV: Flatpack Package Detail
Figure II: Plug-In Package Detail
Table III: Plug-In Dimensions
DIM
A
B
C
D
E
F
G
TYP
(inches)
1.900 "
17 EQ SP @
0.780 "
0.600 "
0.185 "
0.250 "
0.018 " DIA.
TOL
(+/- inches)
0.010 "
0.100 = 1.700 "
0.010 "
0.010 "
0.010 "
MIN
0.002 "
DIM
A
B
C
D
E
F
G
H
Table IV: Flatpack Dimensions
TYP
(inches)
1.900 "
17 EQ SP @
0.780 "
0.185 "
0.080 "
0.500 "
0.018 "
0.010 "
TOL
(+/- inches)
0.010 "
0.100 =1.700 "
0.010 "
0.012 "
0.010 "
MIN
0.002 "
0.002 "
NHI-1530 Series
Transmit Waveforms
TX
TX_L
Vout
(Line to Line)
Transmitter Operation:
A high level input on TXINH will
inhibit the transmitter outputs. If the
TX & TX_L transmitter inputs are
both high or both low, the
transmitter is also inhibited. The
output drivers are short circuit
protected and the device will "fold
back" to decrease power dissipation
under this condition until the fault is
removed.
Receiver Operation:
Receive Waveforms
Vin
(Line to Line)
RX
RX_L
A low level input on RXENA will
disable the receiver outputs RX &
RX_L regardless of bus activity. The
receiver output compatibility may be
specified as logic 0 or logic 1 when in
standby mode.
** See Ordering Information
Ordering Information:
NHI-1530 FP / 883
Reliability Grade
883
= Fully Compliant with Mil-Std-883
= Screened to Mil-Std-883, -55 to +125 °C
M
Blank = Industrial, -40 to +85 °C
Package Style
Blank = Plug-In (Figure III)
FP
= Flatpack (Figure IV)
Decoder Compatibility
29
30
= RX & RX_L, Standby = Logic 0
= RX & RX_L, Standby = Logic 1
** SMD Listing: DESC Drawing# 5962-89522
See QML-38534 for NHI's Manufacturer Qualification Under Mil-PRF-38534
V: October 2005
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