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| 74AC541 Datasheet, PDF (4/8 Pages) STMicroelectronics – OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (NON INVERTED) | |||
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74AC541
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 â¦, Input tr = tf =3 ns)
Symb ol
Parameter
tPLH Propagation Delay Time
tPHL
tPZL Output Enable Time
tPZH
tPLZ Output Disable Time
tPHZ
(*) Voltage range is 3.3V ± 0.3V
(**) Voltage range is 5V ± 0.5V
T est Con ditio n
VCC
(V)
3.3(*)
5.0(**)
3.3(*)
5.0(**)
3.3(*)
5.0(**)
Valu e
TA = 25 oC
-40 to 85 oC
Min. T yp. Max. Min. Max.
1.5 5
8 1.5 9
1.5 4 6.5 1.5 7
1.5 7 10.5 1.5 11.5
1.5 5
8 1.5 8.5
1.5 7 10.5 1.5 11.5
1.5 6
9 1.5 9.5
Unit
ns
ns
ns
CAPACITIVE CHARACTERISTICS
Sy mbo l
Parameter
Test Con dition s
VCC
(V)
Va l u e
TA = 25 oC
-40 to 85 oC
Min. Typ. Max. Min. Max.
Unit
CIN Input Capacitance
5.0
4
pF
COUT Output Capacitance
5.0
8
pF
CPD Power Dissipation
5.0
Capacitance (note 1)
21
pF
1) CPD is defined as the value of the ICâs internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to
Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD ⢠VCC ⢠fIN + ICC/8 (per circuit)
TEST CIRCUIT
TEST
tPLH, tPHL
tPZL, tPLZ
tPZH, tPHZ
CL = 50 pF or equivalent (includes jigand probe capacitance)
RL = R1 = 500⦠orequivalent
RT = ZOUT of pulse generator (typically 50â¦)
4/8
SW IT CH
Open
2VCC
Open
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