74HC_HCT299_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 28 July 2008 7 of 24
NXP Semiconductors
74HC299; 74HCT299
8-bit universal shift register; 3-state
[2] P
tot
derates linearly at 12 mW/K above 70 °C.
[3] P
tot
derates linearly at 8 mW/K above 70 °C.
[4] P
tot
derates linearly at 5.5 mW/K above 60 °C.
8. Recommended operating conditions
9. Static characteristics
Table 5. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 74HC299 74HCT299 Unit
Min Typ Max Min Typ Max
V
CC
supply voltage 2.0 5.0 6.0 4.5 5.0 5.5 V
V
I
input voltage 0 - V
CC
0- V
CC
V
V
O
output voltage 0 - V
CC
0- V
CC
V
T
amb
ambient temperature −40 - +125 −40 - +125 °C
∆t/∆V input transition rise and fall rate
V
CC
= 2.0 V - - 625 - - - ns/V
V
CC
= 4.5 V - 1.67 139 - 1.67 1.39 ns/V
V
CC
= 6.0 V - - 83 - - - ns/V
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
74HC299
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
