74FST3245_06 Datasheet, PDF (3/6 Pages) ON Semiconductor – 8−Bit Bus Switch

74FST3245
DC ELECTRICAL CHARACTERISTICS
V_CC
T_A = −40_C to )85_C
Symbol
Parameter
Conditions
(V)
Min Typ* Max Unit
V_IK Clamp Diode Resistance
I_IN = −18mA
4.5
V_IH High−Level Input Voltage
4.0 to 5.5 2.0
V_IL Low−Level Input Voltage
4.0 to 5.5
I_I
Input Leakage Current
0 v V_IN v 5.5 V
5.5
I_OZ OFF−STATE Leakage Current 0 v A, B v V_CC
5.5
R_ON Switch On Resistance (Note 6) V_IN = 0 V, I_IN = 64 mA
4.5
V_IN = 0 V, I_IN = 30 mA
4.5
V_IN = 2.4 V, I_IN = 15 mA
4.5
V_IN = 2.4 V, I_IN = 15 mA
4.0
I_CC Quiescent Supply Current
V_IN = V_CC or GND, I_OUT = 0
5.5
DI_CC Increase In I_CC per Input
One input at 3.4 V, Other inputs at V_CC or GND
5.5
*Typical values are at V_CC = 5.0 V and T_A = 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
T_A = −40_C to )85_C
V_CC = 4.5 to 5.5 V
V_CC = 4.0 V
Figures Min
Max
Min
Max Unit
t_PHL,
t_PLH
Prop Delay Bus to Bus
(Note 7)
V_I = OPEN
3 and 4
0.25
0.25 ns
t_PZH,
t_PZL
Output Enable Time
V_I = 7 V for t_PZL
V_I = OPEN for t_PZH
3 and 4
1.5
5.9
6.4
ns
t_PHZ,
t_PLZ
Output Disable Time
V_I = 7 V for t_PLZ
V_I = OPEN for t_PHZ
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
C_IN Control Pin Input Capacitance
V_CC = 5.0 V
C_I/O Input/Output Capacitance
V_CC, OE = 5.0 V
8. T_A = )25_C, f = 1 MHz, Capacitance is characterized but not tested.
Typ
Max Unit
3
pF
5
pF
ORDERING INFORMATION
Device Order Number
74FST3245DW
Package
SOIC−20
Shipping^†
38 Units / Rail
74FST3245DWR2
SOIC−20
1000 Units / Tape & Reel
74FST3245DT
TSSOP−20*
(Pb−Free)
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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