Datasheet

74AHC_AHCT244_5 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 05 — 20 December 2007 6 of 16
NXP Semiconductors
74AHC244; 74AHCT244
Octal buffer/line driver; 3-state
C
I
input
capacitance
- 3.0 10 - 10 - 10 pF
C
O
output
capacitance
- 4.0 - - - - - pF
For type 74AHCT244
V
IH
HIGH-level
input voltage
V
CC
= 4.5 V to 5.5 V 2.0 - - 2.0 - 2.0 - V
V
IL
LOW-level
input voltage
V
CC
= 4.5 V to 5.5 V - - 0.8 - 0.8 - 0.8 V
V
OH
HIGH-level
output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= −50 µA 4.4 4.5 - 4.4 - 4.4 - V
I
O
= −8.0 mA 3.94 - - 3.8 - 3.70 - V
V
OL
LOW-level
output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= 50 µA - 0 0.1 - 0.1 - 0.1 V
I
O
= 8.0 mA - - 0.36 - 0.44 - 0.55 V
I
OZ
OFF-state
output current
per input pin; V
I
=V
IH
or V
IL
;
V
CC
= 5.5 V; I
O
=0 A
V
O
=V
CC
or GND;
other pins at V
CC
or GND
--±0.25 - ±2.5 - ±10.0 µA
I
I
input leakage
current
V
I
= 5.5 V or GND;
V
CC
= 0 V to 5.5 V
- - 0.1 - 1.0 - 2.0 µA
I
CC
supply current V
I
=V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
- - 4.0 - 40 - 80 µA
∆I
CC
additional
supply current
per input pin;
V
I
=V
CC
− 2.1 V; I
O
= 0 A;
other pins at V
CC
or GND;
V
CC
= 4.5 V to 5.5 V
- - 1.35 - 1.5 - 1.5 mA
C
I
input
capacitance
- 3 10 - 10 - 10 pF
C
O
output
capacitance
- 4.0 - - - - - pF
Table 6. Static characteristics
…continued
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