Data Device Corporation
www.ddc-web.com
BU-61740B3/61840B3/61860B3
REV 3 - 04/06 - WEB
PARAMETER
MIN
TYP
MAX UNITS
POWER SUPPLY REQUIREMENTS
Voltages/Tolerance
+3.3 V (Logic)
3.0
3.3
3.6
V
+5 V Transceiver (Ch. A, Ch. B)
4.75
5.0
5.5
V
+5 V-LOGIC, 5 V-RAM
(64K RAM for 62860B3)
4.5
5.0
5.25
V
Current Drain (Total Hybrid)
BU-61740B3, BU-61840B3
(Operated with 3.3 V logic power)
+5 V (CH A, CH B)
0% Transmit/Monitor
65
100
mA
25% Duty Transmitter Cycle
180
216
mA
50% Duty Transmitter Cycle
295
332
mA
75% Duty Transmitter Cycle
410
449
mA
+3.3 V (Logic)
25
40
mA
BU-61860B3
(Operated with 3.3 V logic power)
+5 V (RAM, CH A, CH B)
0% Transmit/Monitor
66
120
mA
25% Duty Transmitter Cycle
174
236
mA
50% Duty Transmitter Cycle
282
352
mA
75% Duty Transmitter Cycle
390
469
mA
+3.3 V (Logic)
25
40
mA
POWER DISSIPATION (See Note)
Total Hybrid
BU-61740B3, BU-61840B3
(Operated with 3.3 V logic power)
0% Transmit/Monitor
0.41
0.63
W
25% Duty Transmitter Cycle
0.72
0.86
W
50% Duty Transmitter Cycle
0.97
1.09
W
75% Duty Transmitter Cycle
1.21
1.33
W
PARAMETER
MIN
TYP
MAX UNITS
BU-61860B3
(Operated with 3.3 V logic power)
Idle
0.44
0.80
W
25% Duty Transmitter Cycle
0.80
1.09
W
50% Duty Transmitter Cycle
1.17
1.39
W
100% Duty Transmitter Cycle
1.53
1.68
W
Hottest Die (Transceiver chip)
0% Transmit/Monitor
0.18
0.28
W
25% Duty Transmitter Cycle
0.48
0.58
W
50% Duty Transmitter Cycle
0.78
0.88
W
75% Duty Transmitter Cycle
1.09
1.18
W
CLOCK INPUTS
Frequency: Nominal Value
Default Mode
16.0
MHz
Option
12.0
MHz
Option
10.0
MHz
Option
20.0
MHz
THERMAL
Thermal Resistance, Junction-to-
Balls, Hottest Die (0JC)
18
22
°C/W
Operating Balls Temperature
-40
+85
°C
Operating Junction Temperature
-55
+150
°C
Storage Temperature
-65
+150
°C
PHYSICAL CHARACTERISTICS
Size
128-Ball BGA Package
0.815 x 0.815 x 0.120 in.
20.7 x 20.7 x 3.05
mm
Weight
0.088
oz
2.5
g
Note: Power dissipation specifications assume a transformer coupled configuration with external dissipation (while transmitting) of 0.14 watts for the
active isolation transformer, 0.80 watts for the active bus 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.
Specifications
True Message Monitor
- Selective Message Monitor
- Filter Based on RT Address, T/R bit, Subaddress
- True Message Monitor
- Command Stack
- Message Status, Time Tag, Command Word,
Data Pointer
- Data Stack
- All Monitored Words Following (first)
Command Word
- 50% and 100% Rollover Interrupts for Command
and Data Stacks
- 32-Entry Interrupt Status Queue
- Simultaneous RT/Message Monitor Option
Autonomous Built-In Self-Test
- Protocol Self-Test
- RAM Self-Test
- Online Loopback Test
- Capability for CH. A-to-CH. B
Wraparound Test
- Capability to Test
Transmitter Timeout Function