Datasheet

74HC_HCT240_3 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 03 — 2 August 2007 5 of 18
NXP Semiconductors
74HC240; 74HCT240
Octal buffer/line driver; 3-state; inverting
8. Recommended operating conditions
9. Static characteristics
Table 5. Recommended operating conditions
Symbol Parameter Conditions Min Typ Max Unit
74HC240
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/∆V input transition rise and fall rate V
CC
= 2.0 V - - 625 ns/V
V
CC
= 4.5 V - 1.67 139 ns/V
V
CC
= 6.0 V - - 83 ns/V
T
amb
ambient temperature −40 - +125 °C
74HCT240
V
CC
supply voltage 4.5 5.0 5.5 V
V
I
input voltage 0 - V
CC
V
V
O
output voltage 0 - V
CC
V
∆t/∆V input transition rise and fall rate V
CC
= 4.5 V - 1.67 139 ns/V
T
amb
ambient temperature −40 - +125 °C
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
74HC240
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V 1.5 1.2 - 1.5 - 1.5 - V
V
CC
= 4.5 V 3.15 2.4 - 3.15 - 3.15 - V
V
CC
= 6.0 V 4.2 3.2 - 4.2 - 4.2 - V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V - 0.8 0.5 - 0.5 - 0.5 V
V
CC
= 4.5 V - 2.1 1.35 - 1.35 - 1.35 V
V
CC
= 6.0 V - 2.8 1.8 - 1.8 - 1.8 V
V
OH
HIGH-level
output voltage
V
I
=V
IH
or V
IL
I
O
= −20 µA; V
CC
= 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
I
O
= −20 µA; V
CC
= 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
I
O
= −20 µA; V
CC
= 6.0 V 5.9 6.0 - 5.9 - 5.9 - V
I
O
= −6.0 mA; V
CC
= 4.5 V 3.98 4.32 - 3.84 - 3.7 - V
I
O
= −7.8 mA; V
CC
= 6.0 V 5.48 5.81 - 5.34 - 5.2 - V