74FST3245DWR2 PDF даташит
Спецификация 74FST3245DWR2 изготовлена «ON» и имеет функцию, называемую «8-Bit Bus Switch». |
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Детали детали
Номер произв | 74FST3245DWR2 |
Описание | 8-Bit Bus Switch |
Производители | ON |
логотип |
6 Pages
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74FST3245
8−Bit Bus Switch
The ON Semiconductor 74FST3245 is an 8−bit, high performance
switch. The device is CMOS TTL compatible when operating between
4 and 5.5 Volts. The device exhibits extremely low RON and adds
nearly zero propagation delay. The device adds no noise or ground
bounce to the system.
The device consists of an 8−bit switch. Port A is connected to Port B
when OE is low. If OE is high, the switch is high Z.
Features
• RON t 4 W Typical
• Less Than 0.25 ns−Max Delay Through Switch
• Nearly Zero Standby Current
• No Circuit Bounce
• Control Inputs are TTL/CMOS Compatible
• Pin−For−Pin Compatible with QS3245, FST3245, CBT3245
• All Popular Packages: QSOP−20, TSSOP−20, SOIC−20
• All Devices in Package TSSOP are Inherently Pb−Free*
NC
A0
A1
A2
A3
A4
A5
A6
A7
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
Figure 1. 20−Lead Pinout
OE 19
A0 2
18 B0
A7 9
11 B7
Figure 2. Logic Diagram
TRUTH TABLE
Input OE
L
H
Function
Connect
Disconnect
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
June, 2006 − Rev. 2
1
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20
1
SOIC−20
DW SUFFIX
CASE 751D
MARKING
DIAGRAMS
20
FST3245
AWLYYWW
1
20
1
TSSOP−20
DT SUFFIX
CASE 948E
20
FST
3245
ALYW
1
20
1
QSOP−20
QS SUFFIX
CASE 492A
20
FST3245
AWLYWW
1
A
L, WL
Y
W, WW
=
=
=
=
PIN NAMES
Pin
OE1, OE2
1A, 2A
1B, 2B
Assembly Location
Wafer Lot
Year
Work Week
Description
Bus Switch Enables
Bus A
Bus B
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
Publication Order Number:
74FST3245/D
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74FST3245
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
VI
VO
IIK
IOK
IO
ICC
IGND
TSTG
TL
TJ
qJA
DC Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Sink Current
DC Supply Current per Supply Pin
DC Ground Current per Ground Pin
Storage Temperature Range
Lead Temperature, 1 mm from Case for 10 Seconds
Junction Temperature Under Bias
Thermal Resistance (Note 1)
VI t GND
VO t GND
SOIC
TSSOP
QSOP
−0.5 to )7.0
−0.5 to )7.0
−0.5 to )7.0
−50
−50
128
$100
$100
−65 to )150
260
)150
96
128
200
V
V
V
mA
mA
mA
mA
mA
_C
_C
_C
_C/W
MSL
Moisture Sensitivity
Level 1
FR
VESD
Flammability Rating
ESD Withstand Voltage
Oxygen Index: 28 to 34
Human Body Model (Note 2)
Machine Model (Note 3)
UL 94 V−0 @ 0.125 in
u2000
u200
V
ILatchup Latchup Performance
Above VCC and Below GND at 85_C (Note 4)
$500
mA
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Measured with minimum pad spacing on an FR4 board, using 10 mm−by−1 inch, 2−ounce copper trace with no air flow.
2. Tested to EIA/JESD22−A114−A.
3. Tested to EIA/JESD22−A115−A.
4. Tested to EIA/JESD78.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min Max
VCC
VI
VO
TA
Dt/DV
Supply Voltage
Input Voltage
Output Voltage
Operating Free−Air Temperature
Input Transition Rise or Fall Rate
Operating, Data Retention Only
(Note )
(HIGH or LOW State)
Switch Control Input
Switch I/O
4.0
0
0
−40
0
0
5.5
5.5
VCC
)85
5
DC
5. Unused control inputs may not be left open. All control inputs must be tied to a high or low logic input voltage level.
Unit
V
V
V
_C
ns/V
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74FST3245
DC ELECTRICAL CHARACTERISTICS
VCC
Symbol
Parameter
Conditions
(V)
VIK Clamp Diode Resistance
IIN = −18mA
4.5
VIH High−Level Input Voltage
4.0 to 5.5
VIL Low−Level Input Voltage
4.0 to 5.5
II Input Leakage Current
0 v VIN v 5.5 V
5.5
IOZ OFF−STATE Leakage Current 0 v A, B v VCC
5.5
RON Switch On Resistance (Note 6) VIN = 0 V, IIN = 64 mA
4.5
VIN = 0 V, IIN = 30 mA
4.5
VIN = 2.4 V, IIN = 15 mA
4.5
VIN = 2.4 V, IIN = 15 mA
4.0
ICC Quiescent Supply Current
VIN = VCC or GND, IOUT = 0
5.5
DICC Increase In ICC per Input
One input at 3.4 V, Other inputs at VCC or GND
5.5
*Typical values are at VCC = 5.0 V and TA = 25_C.
6. Measured by the voltage drop between A and B pins at the indicated current through the switch.
TA = −40_C to )85_C
Min Typ* Max
−1.2
2.0
0.8
$1.0
$1.0
47
47
8 15
11 20
3
2.5
Unit
V
V
V
mA
mA
W
mA
mA
AC ELECTRICAL CHARACTERISTICS
Limits
Symbol
Parameter
Conditions
Figures
TA = −40_C to )85_C
VCC = 4.5 to 5.5 V
VCC = 4.0 V
Min Max Min Max
Unit
tPHL,
tPLH
Prop Delay Bus to Bus
(Note 7)
VI = OPEN
3 and 4 0.25 0.25 ns
tPZH,
tPZL
Output Enable Time
VI = 7 V for tPZL
VI = OPEN for tPZH
3 and 4
1.5
5.9
6.4 ns
tPHZ,
tPLZ
Output Disable Time
VI = 7 V for tPLZ
VI = OPEN for tPHZ
3 and 4
1.5
6.0
5.7 ns
7. 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 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance).
CAPACITANCE (Note 8)
Symbol
Parameter
Conditions
CIN Control Pin Input Capacitance
VCC = 5.0 V
CI/O Input/Output Capacitance
VCC, OE = 5.0 V
8. TA = )25_C, f = 1 MHz, Capacitance is characterized but not tested.
Typ Max Unit
3 pF
5 pF
ORDERING INFORMATION
Device Order Number
74FST3245DW
74FST3245DWR2
74FST3245DT
Package
SOIC−20
SOIC−20
TSSOP−20*
(Pb−Free)
Shipping†
38 Units / Rail
1000 Units / Tape & Reel
75 Units / Rail
74FST3245DTR2
TSSOP−20*
(Pb−Free)
2500 Units / Tape & Reel
74FST3245QS
QSOP−20
55 Units / Rail
74FST3245QSR
QSOP−20
2500 Units / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
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74FST3245DWR2 | 8-Bit Bus Switch | ON |
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