MC74VHCT126A_16 Datasheet, PDF (2/6 Pages) ON Semiconductor – Quad Bus Buffer

MC74VHCT126A
A1
2
OE1
1
5
A2
OE2
4
9
A3
OE3 ¹⁰
12
A4
OE4 ¹³
3
Y1
6
Y2
8 _Y3
11
Y4
Figure 1. LOGIC DIAGRAM
Active−High Output Enables
OE1 1
A1 2
Y1 3
OE2 4
A2 5
Y2 6
GND 7
14 V_CC
13 OE4
12 A4
11 Y4
10 OE3
9 A3
8 Y3
Figure 2. PIN ASSIGNMENT
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{MAXIMUM RATINGS}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Rating
Symbol
Value
Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ DC Supply Voltage
V_CC
– 0.5 to + 7.0
V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ^{DC Input Voltage}
V_in
– 0.5 to + 7.0
V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ^{DC Output Voltage}
Output in 3−State V_out
– 0.5 to + 7.0
V
High or Low State
– 0.5 to V_CC + 0.5
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Input Diode Current}
I_IK
− 20
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Output Diode Current (VOUT < GND; VOUT > VCC)}
I_OK
± 20
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{DC Output Current, per Pin}
I_out
± 25
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{DC Supply Current, VCC and GND Pins}
I_CC
± 75
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Power Dissipation in Still Air, SOIC Packagesâ€} 
P_D
TSSOP Package†
500
mW
450
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Storage Temperature}
T_stg
– 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
RECOMMENDED OPERATING CONDITIONS
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _Parameter
Symbol Min
Max
Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{DC Supply Voltage}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{DC Input Voltage}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{DC Output Voltage}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Operating Temperature}
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ _{Input Rise and Fall Time}
V_CC
V_in
Output in 3−State V_out
High or Low State
T_A
V_CC = 5.0 V ±0.5 V
t_r, t_f
4.5
5.5
V
0
5.5
V
0
5.5
V
0
V_CC
− 40
+ 85
_C
0
20
ns/V
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.
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.
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