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FSTD3125QSC 데이터시트 PDF




Fairchild Semiconductor에서 제조한 전자 부품 FSTD3125QSC은 전자 산업 및 응용 분야에서
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부품번호 FSTD3125QSC 기능
기능 4-Bit Bus Switch with Level Shifting
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FSTD3125QSC 데이터시트, 핀배열, 회로
June 2001
Revised June 2001
FSTD3125
4-Bit Bus Switch with Level Shifting
General Description
The Fairchild Switch FSTD3125 provides four high-speed
CMOS TTL-compatible bus switches. 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. A diode to VCC has been
integrated into the circuit to allow for level shifting between
5V inputs and 3.3V outputs.
The device is organized as four 1-bit switches with sepa-
rate OE inputs. When OE is LOW, the switch is ON and
Port A is connected to Port B. When OE is HIGH, the
switch is OPEN and a high-impedance state exists
between the two ports.
Features
s 4switch connection between two ports
s Minimal propagation delay through the switch
s Low lCC
s Zero bounce in flow-through mode
s Control inputs compatible with TTL level
s TruTranslationvoltage translation from 5.0V inputs to
3.3V outputs
Ordering Code:
Order Number Package Number
Package Description
FSTD3125M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
FSTD3125QSC
MQA16
16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
FSTD3125MTC
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagrams
Pin Descriptions
Pin Assignment for SOIC and TSSOP
Pin Name
Description
OE1, OE2, OE3, OE4
1A, 2A, 3A, 4A
1B, 2B, 3B, 4B
NC
Bus Switch Enables
Bus A
Bus B
Not Connected
Truth Table
Pin Assignment for QSOP
Inputs
OE
L
H
Inputs/Outputs
A, B
A=B
Z
TruTranslationis a trademark of Fairchild Semiconductor Corporation.
© 2001 Fairchild Semiconductor Corporation DS500448
www.fairchildsemi.com




FSTD3125QSC pdf, 반도체, 판매, 대치품
AC Electrical Characteristics
Symbol
Parameter
TA = −40 °C to +85 °C,
CL = 50pF, RU = RD = 500
VCC = 4.5 – 5.5V
Units
Conditions
Figure
Number
Min Max
tPHL, tPLH
Propagation Delay Bus to Bus
(Note 6)
0.25 ns VI = OPEN
Figures
1, 2
tPZH, tPZL
Output Enable Time
1.0 6.1
ns VI = 7V for tPZL
VI = OPEN for tPZH
Figures
1, 2
tPHZ, tPLZ
Output Disable Time
1.5 6.4
ns VI = 7V for tPLZ
VI = OPEN for tPHZ
Figures
1, 2
Note 6: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On
Resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage source (zero output impedance).
Capacitance (Note 7)
Symbol
Parameter
Typ
CIN Control Pin Input Capacitance
3
CI/O Input/Output Capacitance
6
Note 7: TA = +25°C, f = 1 MHz, Capacitance is characterized but not tested.
Max
Units
pF
pF
Conditions
VCC = 5.0V
VCC, OE = 5.0V
AC Loading and Waveforms
Note: Input driven by 50 source terminated in 50
Note: CL includes load and stray capacitance
Note: Input PRR = 1.0 MHz, tW = 500ns
FIGURE 1. AC Test Circuit
www.fairchildsemi.com
FIGURE 2. AC Waveforms
4

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FSTD3125QSC 전자부품, 판매, 대치품
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC14
Technology Description
The Fairchild Switch family derives from and embodies Fairchilds proven switch technology used for several years in its
74LVX3L384 (FST3384) bus switch product.
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILDS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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부품번호상세설명 및 기능제조사
FSTD3125QSC

4-Bit Bus Switch with Level Shifting

Fairchild Semiconductor
Fairchild Semiconductor

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