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PDF RHD8540 Data sheet ( Hoja de datos )

Número de pieza RHD8540
Descripción 64-Channel Analog Multiplexer
Fabricantes Aeroflex Circuit Technology 
Logotipo Aeroflex Circuit Technology Logotipo



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Standard Products
RadHard-by-Design
Datasheet
RHD8540 64-Channel Analog Multiplexer
32-Channel Kelvin Measurement Configured
www.aeroflex.com/RHDseries
April 1, 2015
FEATURES
64 channels (32 Kelvin measurement channels) provided by six 16-channel multiplexers
Single power supply operation at +3.3V to +5V
Radiation performance
- Total dose:
- ELDRS Immune
- SEL Immune:
- Neutron Displacement Damage:
>1Mrad(Si), Dose rate = 50 - 300 rads(Si)/s
>100 MeV-cm2/mg
>1014 neutrons/cm2
Full military temperature range
Low power consumption < 33.6 mW
CMOS analog switching allows rail to rail operation and low switch impedance
Two address busses A(0-3) & B(0-3) and four enable lines afford flexible organization
Designed for aerospace and high reliability space applications
Packaging – Hermetic ceramic
- 96 leads, 1.320"Sq x 0.200"Ht quad flat pack
- Weight - 15 grams max
Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.
GENERAL DESCRIPTION
Aeroflex’s RHD8540 is a radiation hardened, single supply, 64-Channel Multiplexer MCM (multi-chip module). The
RHD8540 design uses specific circuit topology and layout methods to mitigate total ionization dose effects and single
event latchup. These characteristics make the RHD8540 especially suited for the harsh environment encountered in
Deep Space missions. It is available in a 96 lead High Temperature Co-Fired Ceramic (HTCC) Quad Flatpack
(CQFP). It is guaranteed operational from -55°C to +125°C. Available screened in accordance with MIL-PRF-38534
Class K, the RHD8540 is ideal for demanding military and space applications.
ORGANIZATION AND APPLICATION
The RHD8540 consists of four, single supply, 16-Channel Multiplexers arranged as shown in the Block Diagram. The
RHD8540 design is inherently radiation tolerant.
The device will not latch with SEU events to above 100MeV-cm2/mg. Total dose degradation is minimal to above
1Mrad(Si). Displacement damage environments to neutron fluence equivalents in the mid 1014 neutrons per cm2 range
are readily tolerated. There is no sensitivity to low-dose rate (ELDRS) effects. SEU effects are application dependent.
A SECTION
Thirty-two (32) Kelvin measurement channels addressable by bus A0~A3, in two 16 channel blocks, each block
enabled separately. Each block connects the addressed channel to two outputs, "Output" and "Current". This technique
enables selecting and reading a remote resistive sensor without the multiplexer resistance being part of the
measurement. For grounded sensors, this is done by passing current to the sensor by means of the "Current" pin and
reading the resultant voltage (proportional to the sensor resistance) at the "Output" pin.
B SECTION
Thirty-two (32) channels addressable by bus B0~B3, in two 16 channel blocks, each block enabled separately. Each
block connects the addressed channel to one output. By paralleling the channel inputs and enables, this section can be
converted to act like one of the 16 channel blocks of the A section.
SCD8540 Rev A

1 page




RHD8540 pdf
TRUTH TABLE (CH0 – CH15)
B3 B2 B1 B0 EN(0-15) "ON" CHANNEL 1/
XXXX
LLLL
L L LH
L LHL
L LHH
LHL L
LHLH
L HH L
L HHH
HL L L
HL LH
HLHL
H L HH
HHL L
HH L H
HHH L
HHHH
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
NONE
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH13
CH14
CH15
1/ Between (CH0-CH15) and OUTPUT1(0-15)
TRUTH TABLE (CH16 – CH31)
B3 B2 B1 B0 EN(16-31) "ON" CHANNEL 2/
XXXX
LLLL
L L LH
L LHL
L LHH
LHL L
LHLH
L HH L
L HHH
HL L L
HL LH
HLHL
H L HH
HHL L
HH L H
HHH L
HHHH
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
NONE
CH16
CH17
CH18
CH19
CH20
CH21
CH22
CH23
CH24
CH25
CH26
CH27
CH28
CH29
CH30
CH31
2/ Between (CH16-CH31) and OUTPUT2 (16-31)
TRUTH TABLE (CH32 – CH47)
A3 A2 A1 A0 EN(32-47) "ON" CHANNEL 3/
XXXX
LLLL
L L LH
L LHL
L LHH
LHL L
LHLH
L HH L
L HHH
HL L L
HL LH
HLHL
H L HH
HHL L
HH L H
HHH L
HHHH
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
NONE
CH32
CH33
CH34
CH35
CH36
CH37
CH38
CH39
CH40
CH41
CH42
CH43
CH44
CH45
CH46
CH47
3/ Between (CH32-CH47) and OUTPUT3 (32-47)
TRUTH TABLE (CH48 – CH63)
A3 A2 A1 A0 EN(48-63) "ON" CHANNEL 4/
XXXX
LLLL
L L LH
L LHL
L LHH
LHL L
LHLH
L HH L
L HHH
HL L L
HL LH
HLHL
H L HH
HHL L
HH L H
HHH L
HHHH
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
NONE
CH48
CH49
CH50
CH51
CH52
CH53
CH54
CH55
CH56
CH57
CH58
CH59
CH60
CH61
CH62
CH63
4/ Between (CH48-CH63) and OUTPUT4 (48-63)
SCD8540 Rev A 4/1/15
5
Aeroflex Plainview

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