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UT54ACS164245SWC RadHard Schmitt CMOS 16-bit Bidirectional MultiPurpose Transceiver
型号:   UT54ACS164245SWC
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描述:   RadHard Schmitt CMOS 16-bit Bidirectional MultiPurpose Transceiver
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UT54ACS164245S
RadHard Schmitt CMOS 16-bit Bidirectional MultiPurpose Transceiver
Datasheet
April , 2002
FEATURES
Voltage translation
- 5V bus to 3.3V bus
- 3.3V bus to 5V bus
Cold sparing
- 1MΩ minimum input impedance power-off
• 0.6µm
Commercial RadHard CMOS
- Total dose: 100K rad(Si)
- Single Event Latchup immune
High speed, low power consumption
Schmitt trigger inputs to filter noisy signals
Available QML Q or V processes
Standard Microcircuit Drawing 5962-98580
Package:
- 48-lead flatpack, 25 mil pitch (.390 x .640)
TM
LOGIC SYMBOL
O E1 (48)
O E2 (25)
DIR1
(1)
G1
2EN1 (BA)
2EN2 (AB)
1EN1 (BA)
1EN2 (AB)
G2
11
12
(24)
DIR2
1A1
1A2
1A3
(47)
(46)
(44)
(2)
(3)
(5)
(6)
(8)
1B1
1B2
1B3
1B4
(43)
1A4
(41)
1A5
(40)
1A6
(38)
1A7
(37)
1A8
(36)
2A1
2A2
2A3
(35)
(33)
21
22
1B5
(9)
1B6
(11)
1B7
(12)
1B8
(13)
2B1
(14)
2B2
(16)
2B3
(17)
2B4
(19)
2B5
(20)
2B6
(22)
2B7
(23)
2B8
DESCRIPTION
The 16-bit wide UT54ACS164245S MultiPurpose transceiver
is built using UTMC’s Commercial RadHard
TM
epitaxial
CMOS technology and is ideal for space applications. This high
speed, low power UT54ACS164245S transceiver is designed to
perform multiple functions including: asynchronous two-way
communication, signal buffering, voltage translation, and cold
sparing. With V
DD
equal to zero volts, the UT54ACS164245S
outputs and inputs present a minimum impedance of 1MΩ mak-
ing it ideal for "cold spare" applications. Balanced outputs and
low "on" output impedance make the UT54ACS164245S well
suited for driving high capacitance loads and low impedance
backplanes. The UT54ACS164245S enables system designers
to interface 3.3 volt CMOS compatible components with 5 volt
CMOS components. For voltage translation, the A port inter-
faces with the 3.3 volt bus; the B port interfaces with the 5 volt
bus. The direction control (DIRx) controls the direction of data
flow. The output enable (OEx) overrides the direction control
and disables both ports. These signals can be driven from either
port A or B. The direction and output enable controls operate
these devices as either two independent 8-bit transceivers or one
16-bit transceiver.
(32)
2A4
(30)
2A5
(29)
2A6
(27)
2A7
(26)
2A8
PIN DESCRIPTION
Pin Names
OE x
DIRx
xAx
xBx
Description
Output Enable Input (Active Low)
Direction Control Inputs
Side A Inputs or 3-State Outputs (3.3V Port)
Side B Inputs or 3-State Outputs (5V Port)
FUNCTION TABLE
ENABLE
OE x
L
L
H
DIRECTION
DIRx
L
H
X
OPERATION
B Data To A Bus
A Data To B Bus
Isolation
1
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