TABLE 1. BU-63152 SPECIFICATIONS
TABLE 1. BU-63152 SPECIFICATIONS (CONT.)
PARAMETER
MIN TYP
MAX
UNITS
PARAMETER
MIN TYP
MAX
UNITS
THERMAL
ABSOLUTE MAXIMUM RATING
Supply Voltage
• +5 V (Vcc)
Receiver
• Operating Ambient Temperature
• Thermal Resistance, Junction-
to-Ambient (Either Channel)
(Note 11)
-55
40
85
45
°C
°C/W
-0.3
5.0
7.0
20
V
• Input Voltage (to transformer)
Vp-p
• Operating Junction Temperature
• Storage Temperature
• Lead Temperature
-55
-65
150
150
+300
°C
°C
°C
Logic
V
• Voltage Input Range
-0.3
2.5
Vcc+0.3
(soldering, 10 sec.)
RECEIVER
Differential Input Resistance
(Notes 1-6)
Differential Input Capacitance
(Notes 1-6)
Threshold Level (Note 7)
Common Mode Voltage (Note 8)
kohm
pF
PHYSICAL CHARACTERISTICS
Package
Size
64-Pin QFP
5
14.00 x 14.00 x 2.00
(0.551 x 0.551 x 0.079)
mm
(in)
oz
0.20
0.860
10
Vp-p
Vpeak
0.5
(14)
Weight
(g)
TRANSMITTER
Differential Output Voltage
• Direct Coupled Across 35 Ω,
Measured on Bus
Transformer Coupled Across
• 70 Ω, Measured on Stub
(Note 9)
Output Noise, Differential (Direct
Coupled)
Dynamic Output Offset Voltage,
Transformer Coupled Across 70Ω
Rise/Fall Time
(Notes 1 through 6 are applicable to the Receiver Differential Resistance and
Differential Capacitance specifications:)
6
7.4
22
9
Vp-p
Vp-p
20
27
(1) Specifications include both transmitter and receiver (assumed tied together
externally).
(2) Impedance parameters are specified directly between pins TX/RX A(B) and
TX/RX A(B) of the hybrid.
(3) It is assumed that all power and ground inputs to the hybrid are connected.
(4) The specifications are applicable for both unpowered and powered condi-
tions.
(5) The specifications assume a 2 volt rms balanced, differential, sinusoidal
input. The applicable frequency range is 75 kHz to 1 MHz.
(6) Minimum resistance and maximum capacitance parameters are guaranteed
over the operating range, but are not tested.
(7) The Threshold Level, as referred to in this specification, is meant to be the
maximum peak-to-peak voltage (measured on the stub) that can be applied
to the receiver's input without causing the output to change from the OFF
state.
(8) Assumes a common mode voltage within the frequency range of dc to 2
MHz, applied to pins of the isolation transformer on the stub side (either
direct or transformer coupled), and referenced to transceiver ground.
Transformer must be a DDC recommended transformer or other transformer
that provides an equivalent minimum CMRR.
10
mVp-p,
diff
mVp-p,
diff
-250
100
0
+250
300
ns
150
LOGIC
VIH
VIL
IIH(TXIN, TXIN, TXINHIBIT)
IIH(STROBE)
IIL(TXIN, TXIN, TXINHIBIT)
IIL(STROBE)
2.0
0
20
Vcc
0.8
100
0
V
V
µA
µA
µA
µA
V
0
-100
4.0
-20
0
0.4
VOH(Vcc=4.75V,IOH=max)
V
VOL(Vcc=4.75V, IOL=min)
4.0
0
-2.4
mA
mA
IOL
IOH
(9) MIL-STD-1760 requires minimum output voltage of 20 Vp-p on the stub con-
nection.
(10) Power dissipation specifications assume a transformer coupled configura-
tion, with external dissipation (while transmitting) of 0.14 watts for the active
isolation transformer, 0.08 watts for the active coupling transformer, 0.45
watts for each of the two bus isolation resistors, and 0.15 watts for each of
the two bus termination resistors.
(11) Thermal resistance, Junction-to-Ambient (Either Channel) applies when the
device is soldered to a 4 in x 4 in x 0.060 in (FR4 or equivalent) PC board
with a “1-oz” (1.4 mil thickness) ground-plane layer on the back of the board,
positioned horizontally in still air.
POWER SUPPLY REQUIREMENTS
Voltages/Tolerances
• +5V
Current Drain (Both Channels)
• Idle
• 25% Transmitter Duty Cycle
(One Channel Transmitting)
• 50% Transmitter Duty Cycle
(One Channel Transmitting)
• 100% Transmitter Duty Cycle
(One Channel Transmitting)
4.75
5.0
5.5
V
100
216
mA
mA
332
565
mA
mA
POWER DISSIPATION, Vcc=5.0V
One Channel (Note 10)
• Idle
• 25% Transmitter Duty Cycle
• 50% Transmitter Duty Cycle
• 100% Transmitter Duty Cycle
.25
.5
.7
W
W
W
W
1.2
Data Device Corporation
www.ddc-web.com
3
BU-63152