DataSheet.es    


PDF FSTUD32450G Data sheet ( Hoja de datos )

Número de pieza FSTUD32450G
Descripción Configurable 4-Bit to 40-Bit Bus Switch with -2V Undershoot Protection and Selectable Level Shifting
Fabricantes Fairchild Semiconductor 
Logotipo Fairchild Semiconductor Logotipo



Hay una vista previa y un enlace de descarga de FSTUD32450G (archivo pdf) en la parte inferior de esta página.


Total 13 Páginas

No Preview Available ! FSTUD32450G Hoja de datos, Descripción, Manual

August 2001
Revised July 2002
FSTUD32450
Configurable 4-Bit to 40-Bit Bus Switch with
2V Undershoot Protection and Selectable Level Shifting
General Description
The Fairchild Universal Bus Switch FSTUD32450 provides
4-bit, 5-bit, 8-bit, 10-bit, 16-bit, 20-bit...40-bit of high-speed
CMOS TTL-compatible bus switching. The low On Resis-
tance of the switch allows inputs to be connected to out-
puts without adding propagation delay or generating
additional ground bounce noise.
The FSTUD32450 is designed to allow “customer” configu-
ration control of the enable connections. The device can be
organized as either a ten 4-bit, eight 5-bit, four 10-bit, two
20-bit or one 40-bit enabled bus switch. Also achievable
are 8-bit and 16-bit enabled configurations (see Functional
Description). The device's bit configuration is controlled
through select pin logic. (see Truth Table). When OEx is
LOW, Port Ax is connected to Port Bx. When OEx is HIGH,
the switch is OPEN.
The A and B Ports are protected against undershoot to
support an extended range to 2.0V below ground.
Fairchild's integrated Undershoot Hardened Circuit
(UHC) senses undershoot at the I/O, and responds by
preventing voltage differentials from developing and turn-
ing the switch on.
Another innovative device feature is the addition of a level
shifting select pin, “S2 and S5”. When S2 and S5 are LOW,
the device behaves as a standard N-MOS switch. When S2
and S5 are HIGH, a diode to VCC is integrated into the cir-
cuit allowing for level shifting between 5V inputs and 3.3V
outputs.
Features
I Undershoot protected to 2V (A and B Ports)
I Voltage level shifting
I 4switch connection between two ports
I Minimal propagation delay through the switch
I Low lCC
I Zero bounce in flow-through mode
I Control inputs compatible with TTL level
I See Applications Notes AN-5008 and AN-5021 for UHC
details
I Packaged in plastic Fine-Pitch Ball Grid Array (FBGA)
Applications Note
Select pins S0, S1, S2, S3, S4 and S5 are intended to be
used as static user configurable control pins. The AC per-
formance of these pins has not been characterized or
tested. Switching of these select pins during system opera-
tion may temporarily disrupt output logic states and/or
enable pin controls.
40-bit configuration can be achieved by connecting the
OE1 and the OE6 pins to together.
Ordering Code:
Order Number Package Number
Package Description
FSTUD32450G
(Note 1)(Note 2)
BGA114A
114-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide
Note 1: Ordering code Gindicates Trays.
Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter Xto the ordering code.
UHCis a trademark of Fairchild Semiconductor Corporation.
© 2002 Fairchild Semiconductor Corporation DS500447
www.fairchildsemi.com

1 page




FSTUD32450G pdf
Functional Description
The device can also be configured as an 8 and 16-bit device by grounding the unused pins in Configurations 2 and 1
respectively. The 8-bit configuration may also be achieved by tying two of the 4-bit enables from configuration together and
tying the remaining enable pin (OE) HIGH.
Truth Tables (X = VCC or GND)
(see Functional Description)
S2, S5
L
H
Select Pin
Mode
Std. NMOS Switch
Level Shifting Diode Enabled
20-Bit Configuration (S0 = S1 = L)
Inputs
OE1
OE2
OE3
LXX
HXX
OE6
L
H
Inputs
OE7
X
OE8
X
XX
OE4
X
X
S3 = S4 = L
OE9
X
X
OE5
X
X
OE10
X
X
Inputs/Outputs
1A1-10 = 1B1-10, 2A1-10 = 2B1-10
Z
Inputs/Outputs
3A1-10 = 3B1-10, 4A1-10 = 4B1-10
Z
10-Bit Configuration (S0 = L, S1 = H)
Inputs
OE1
OE2
OE3
OE4
LXXL
L XXH
HXX L
HXXH
S3 = L, S4 = H
Inputs
OE6
L
OE7
X
OE8
X
OE9
L
L XXH
HXX L
HXXH
OE5
X
X
X
X
OE10
X
X
X
X
Inputs/Outputs
1A1-10 = 1B1-10
1AX = 1BX
1AX = 1BX
Z
Z
2A1-10 = 2B1-10
2AX = 2BX
Z
2AX = 2BX
Z
Inputs/Outputs
4A1-10 = 4B1-10
4AX = 4BX
4AX = 4BX
Z
Z
3A1-10 = 3B1-10
3AX = 3BX
Z
3AX = 3BX
Z
5 www.fairchildsemi.com

5 Page





FSTUD32450G arduino
Undershoot Characteristic (Note 12)
Symbol
Parameter
Min
Typ
Max
Units
Conditions
VOUTU
Output Voltage During Undershoot
2.5 VOH 0.3
V S2 = S5 = 0V, Figure 1
TBD
TBD
V S2 = S5 = VCC
Note 12: This test is intended to characterize the devices protective capabilities by maintaining output signal integrity during an input transient voltage
undershoot event.
FIGURE 1.
Device Test Conditions
Parameter
VIN
R1 = R2
VTRI
VCC
Value
see Waveform
100K
11.0
5.5
Units
V
V
V
AC Loading and Waveforms
Transient
Input Voltage (VIN) Waveform
Note: Input driven by 50source terminated in 50
Note: CL includes load and stray capacitance
Note: Input Frequency = 1.0 MHz, tW = 500 ns
FIGURE 2. AC Test Circuit
FIGURE 3. AC Waveforms
11
www.fairchildsemi.com

11 Page







PáginasTotal 13 Páginas
PDF Descargar[ Datasheet FSTUD32450G.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
FSTUD32450Configurable 4-Bit to 40-Bit Bus Switch with -2V Undershoot Protection and Selectable Level ShiftingFairchild Semiconductor
Fairchild Semiconductor
FSTUD32450GConfigurable 4-Bit to 40-Bit Bus Switch with -2V Undershoot Protection and Selectable Level ShiftingFairchild Semiconductor
Fairchild Semiconductor

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar