74HC_HCT126 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 3 — 22 September 2014 3 of 16
NXP Semiconductors
74HC126; 74HCT126
Quad buffer/line driver; 3-state
5.2 Pin description
6. Functional description
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For DIP14 package: P
tot
derates linearly with 12 mW/K above 70 C.
[3] For SO14 package: P
tot
derates linearly with 8 mW/K above 70 C.
For (T)SSOP14 packages: P
tot
derates linearly with 5.5 mW/K above 60 C.
Table 2. Pin description
Symbol Pin Description
1OE, 2OE, 3OE, 4OE 1, 4, 10, 13 data enable input (active HIGH)
1A, 2A, 3A, 4A 2, 5, 9, 12 data input
1Y, 2Y, 3Y, 4Y 3, 6, 8, 11 data output
GND 7 ground (0 V)
V
CC
14 supply voltage
Table 3. Function table
[1]
Control Input Output
nOE nA nY
HLL
HHH
LXZ
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
V
CC
supply voltage 0.5 +7 V
I
IK
input clamping current V
I
< 0.5 V or V
I
>V
CC
+0.5 V
[1]
- 20 mA
I
OK
output clamping current V
O
< 0.5 V or V
O
>V
CC
+0.5V
[1]
- 20 mA
I
O
output current 0.5 V < V
O
< V
CC
+0.5V - 35 mA
I
CC
supply current - 70 mA
I
GND
ground current 70 - mA
T
stg
storage temperature 65 +150 C
P
tot
total power dissipation T
amb
= 40 C to +125 C
DIP14 package
[2]
- 750 mW
SO14 and (T)SSOP14 packages
[3]
- 500 mW
