5962-87552012A Datasheet, PDF (4/22 Pages) Texas Instruments – OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

SN54AC244, SN74AC244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS514E − JUNE 1995 − REVISED OCTOBER 2003
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T_A = 25°C
SN54AC244
V_CC
MIN TYP MAX MIN MAX
3 V 2.9
2.9
I_OH = −50 μA
4.5 V 4.4
4.4
5.5 V 5.4
5.4
V_OH
I_OH = −12 mA
I_OH = −24 mA
I_OH = −50 mA^†
I_OH = −75 mA^†
3 V 2.56
4.5 V 3.86
5.5 V 4.86
5.5 V
5.5 V
3V
2.4
3.7
4.7
3.85
0.1
0.1
I_OL = 50 μA
4.5 V
5.5 V
0.1
0.1
0.1
0.1
I_OL = 12 mA
V_OL
I_OL = 24 mA
I_OL = 50 mA^†
I_OL = 75 mA^†
Data inputs
V_I = V_CC or GND
I_I
Control inputs V_I = V_CC or GND
I_OZ
V_O = V_CC or GND,
V_I(OE) = V_IL or V_IH
3V
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
0.36
0.36
0.36
± 0.1
± 0.1
± 0.25
0.5
0.5
0.5
1.65
±1
±1
±5
I_CC
V_I = V_CC or GND,
I_O = 0
5.5 V
4
80
C_i
V_I = V_CC or GND
5V
2.5
† _{Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.}
SN74AC244
MIN MAX
2.9
4.4
5.4
2.46
3.76
4.76
3.85
0.1
0.1
0.1
0.44
0.44
0.44
1.65
±1
±1
± 2.5
40
UNIT
V
V
μA
μA
μA
pF
switching characteristics over recommended operating free-air temperature range,
V_CC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
T_A = 25°C
SN54AC244 SN74AC244
UNIT
MIN TYP MAX MIN MAX MIN MAX
t_PLH
A
t_PHL
t_PZH
OE
t_PZL
t_PHZ
OE
t_PLZ
2 6.5
9
1 12.5 1.5
10
Y
ns
2 6.5
9
1
12
2
10
2
6 10.5
1 11.5 1.5
11
Y
ns
2.5 7.5
10
1
13
2
11
3
7
10
1 12.5 1.5 10.5
Y
ns
2.5 7.5 10.5
1
13 2.5 11.5
4
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