74HC_HCT2G34_1 © NXP B.V. 2006. All rights reserved.
Product data sheet Rev. 01 — 6 October 2006 3 of 14
NXP Semiconductors
74HC2G34; 74HCT2G34
Dual buffer gate
7. Functional description
[1] H = HIGH voltage level;
L = LOW voltage level.
8. Limiting values
[1] The minimum input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SC-88 and SC-74 packages: above 87.5 °C the value of P
tot
derates linearly with 4.0 mW/K.
9. Recommended operating conditions
Table 4. Function table
[1]
Input Output
nA nY
LL
HH
Table 5. 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 +7.0 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
+ 0.5 V
[1]
- ±20 mA
I
O
output current V
O
= −0.5 V to V
CC
+ 0.5 V
[1]
- ±25 mA
I
CC
supply current
[1]
- +50 mA
I
GND
ground current
[1]
- −50 mA
T
stg
storage temperature −65 +150 °C
P
tot
total power dissipation
[2]
- 250 mW
Table 6. Recommended operating conditions
Symbol Parameter Conditions Min Typ Max Unit
Type 74HC2G34
V
CC
supply voltage 2.0 5.0 6.0 V
V
I
input voltage 0 - V
CC
V
V
O
output voltage 0 - V
CC
V
T
amb
ambient temperature −40 +25 +125 °C
t
r
rise time except for Schmitt trigger inputs
V
CC
= 2.0 V - - 1000 ns
V
CC
= 4.5 V - - 500 ns
V
CC
= 6.0 V - - 400 ns
t
f
fall time except for Schmitt trigger inputs
V
CC
= 2.0 V - - 1000 ns
V
CC
= 4.5 V - - 500 ns
V
CC
= 6.0 V - - 400 ns
