MC74VHCT541A_14 Datasheet, PDF (2/7 Pages) ON Semiconductor – Octal Bus Buffer

MC74VHCT541A
DATA
INPUTS
OUTPUT
ENABLES
2
A1
18
Y1
3
A2
17
Y2
4
A3
16
Y3
5
A4
6
A5
15
Y4
14
Y5
NONINVERTING
OUTPUTS
7
A6
13
Y6
8
A7
12
Y7
9
A8
OE1 ¹
11
Y8
OE2 ¹⁹
Figure 1. Logic Diagram
OE1 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
20 V_CC
19 OE2
18 Y1
17 Y2
16 Y3
15 Y4
14 Y5
13 Y6
12 Y7
11 Y8
Figure 2. Pin Assignment
MAXIMUM RATINGS
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Symbol
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _VCC
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Vin
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Vout
Parameter
DC Supply Voltage
DC Input Voltage
DC Output Voltage
Outputs in 3−State
High or Low State
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ I_IK
Input Diode Current
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ I_OK
Output Diode Current (V_OUT < GND; V_OUT > V_CC)
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ I_out DC Output Current, per Pin
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ I_CC DC Supply Current, V_CC and GND Pins
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ P_D
Power Dissipation in Still Air,
SOIC Package†
TSSOP Package†
Value
Unit
– 0.5 to + 7.0
V
– 0.5 to + 7.0
V
– 0.5 to + 7.0
V
– 0.5 to V_CC + 0.5
− 20
mA
± 20
mA
± 25
mA
± 75
mA
500
mW
450
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Tstg Storage Temperature}
– 65 to + 150
_C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{these limits are exceeded, device functionality should not be assumed, damage may occur and}
reliability may be affected.
†Derating − SOIC Packages: – 7 mW/_C from 65_ to 125_C
TSSOP Package: − 6.1 mW/_C from 65_ to 125_C
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this high−impedance cir-
cuit. For proper operation, V_in and
V_out should be constrained to the
range GND v (V_in or V_out) v V_CC.
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or V_CC).
Unused outputs must be left open.
RECOMMENDED OPERATING CONDITIONS
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Symbol
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _VCC
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Vin
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Vout
DC Supply Voltage
DC Input Voltage
DC Output Voltage
Parameter
Outputs in 3−State
High or Low State
Min
Max Unit
4.5
5.5
V
0
5.5
V
0
5.5
V
0
V_CC
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ^TA
Operating Temperature
− 40
+ 85
_C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ^tr^{, t}f ^{Input Rise and Fall Time}
V_CC =5.0V ±0.5V
0
20 ns/V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ^{Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond}
the Recommended Operating Ranges limits may affect device reliability.
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