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74FST3345 Datasheet, PDF (3/6 Pages) ON Semiconductor – 8-Bit Bus Switch | |||
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74FST3345
DC ELECTRICAL CHARACTERISTICS
VCC
TA = *40_C to )85_C
Symbol
Parameter
Conditions
(V)
Min Typ* Max Unit
VIK Clamp Diode Resistance
IIN = *18mA
4.5
VIH HighâLevel Input Voltage
4.0 to 5.5 2.0
VIL LowâLevel Input Voltage
4.0 to 5.5
II
Input Leakage Current
0 v VIN v 5.5 V
5.5
IOZ OFFâSTATE 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.
*1.2 V
V
0.8
V
$1.0 mA
$1.0 mA
4
7
W
4
7
8
15
11
20
3
mA
2.5 mA
AC ELECTRICAL CHARACTERISTICS
Limits
Symbol
Parameter
Conditions
TA = *40_C to )85_C
VCC = 4.5 to 5.5 V
VCC = 4.0 V
Figures 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
6.5
7.0
ns
tPHZ,
tPLZ
Output Disable Time
VI = 7 V for tPLZ
VI = OPEN for tPHZ
3 and 4
1.0
8.0
8.2
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
74FST3345DW
Package
SOICâ20
Shippingâ
38 Units / Rail
74FST3345DWR2
SOICâ20
1000 Units / Tape & Reel
74FST3345DT
TSSOPâ20*
(PbâFree)
75 Units / Rail
74FST3345DTR2
TSSOPâ20*
(PbâFree)
2500 Units / Tape & Reel
74FST3345QS
QSOPâ20
55 Units / Rail
74FST3345QSR
QSOPâ20
2500 Units / Tape & Reel
â 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 PbâFree.
http://onsemi.com
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