UT54BS16245 Datasheet, PDF (1/11 Pages) Aeroflex Circuit Technology – UT54BS16245 16bit Bus Switch

Standard Products
UT54BS16245 16bit Bus Switch
Preliminary Datasheet
February 2015
www.aeroflex.com/busswitch
FEATURES
□ Provides cold-sparing capability without the need
for actual cold-sparing multiplexer inputs
□ Bidirectional operation
□ 3.3V operating lower supply with typical 11Ω
switch connection between ports
□ 5V operating lower supply with typical 5Ω switch
connection between ports
□ Isolates non cold-spared devices from an active
bus
□ Ultra low power CMOS technology
□ ESD rating HBM: 2000V, Class 2
□ Operational environment:
- Total dose: 300 krad(Si)
- Latchup immune (LET <= 100 MeV-cm2/mg)
□ Packaging:
- 48-lead flatpack
□ Standard Microcircuit Drawing (SMD)
- QML Q and V pending
INTRODUCTION
The UT54BS16245 provides 16 bits of high-speed
CMOS-compatible bus switching in a standard
’16245 device pinout. The low on-state resistance of
the switch allows connections to be made with
minimal propagation delay. The device is organized
as two 8-bit low-impedance switches with separate
output-enable (/EN) inputs. When OE is low, the
switch is on, and data can flow from the A port to
the B port, or vice versa. When /EN is high, the
switch is open, and the high-impedance state exists
between the two ports.
APPLICATIONS INFORMATION
Memory Interface
- Solution for multiple memory devices on a
bus
Bus Isolation
- Ability to electrically isolate a device, or
banks of devices, from memory bus or
ADC output when not needed
- Enables bank switching for redundancy or
device failure
- Provides cold-sparing capability without
the need for actual cold-sparing buffers
Redundancy
- llows multiple non cold-spare devices to be
present on a bus
Supports Analog Applications
- In voltage range: 3.0 to 3.6V or 4.5 to 5.5V
- Signal isolation: -60dB
- Bandwidth (3dB): 500 MHz
1A1
1B1
2A1
2B1
1A8
1B8
2A8
2B8
/EN1
/EN2
36-00-03-005
Ver. 1.0.0
Figure 1. UT54BS16245 Block Diagram
1
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