Datasheet
6
SN54LS240
,
SN54LS241
,
SN54LS244
,
SN54S240
,
SN54S241
,
SN54S244
SN74LS240
,
SN74LS241
,
SN74LS244
,
SN74S240
,
SN74S241
,
SN74S244
SDLS144D –APRIL 1985–REVISED OCTOBER 2016
www.ti.com
Product Folder Links: SN54LS240 SN54LS241 SN54LS244 SN54S240 SN54S241 SN54S244 SN74LS240
SN74LS241 SN74LS244 SN74S240 SN74S241 SN74S244
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Electrical Characteristics – SNx4S24x (continued)
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS
(1)
MIN TYP
(2)
MAX UNIT
(3) Not more than one output must be shorted at a time, and duration of the short-circuit must not exceed one second.
I
OZH
V
CC
= MAX, V
IL
= 0.8 V, V
IH
= 2 V, V
O
= 2.4 V 50 µA
I
OZL
V
CC
= MAX, V
IL
= MAX, V
IH
= 2 V, V
O
= 0.5 V –50 µA
I
I
V
CC
= MAX, V
I
= 5.5 V 1 mA
I
IH
V
CC
= MAX, V
I
= 2.7 V 50 µA
I
IL
V
CC
= MAX, V
IL
= 0.5 V
Any A –400 µA
Any G –2 mA
I
OS
(3)
V
CC
= MAX –50 –225 mA
I
CC
V
CC
= MAX, output open
Outputs high
SN54S240 80 123
mA
SN74S240 80 135
SN54S241, SN54S244 95 147
SN74S241, SN74S244 95 160
Outputs low
SN54S240 100 145
SN74S240 100 150
SN54S241, SN54S244 120 170
SN74S241, SN74S244 120 180
Outputs disabled
SN54S240 100 145
SN74S240 100 150
SN54S241, SN54S244 120 170
SN74S241, SN74S244 120 180
6.7 Switching Characteristics – SNx4LS24x
V
CC
= 5 V, T
A
= 25°C (see SN54LS24x and SN74LS24x Devices)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
PLH
R
L
= 667 Ω, C
L
= 45 pF
SNx4LS240 9 14
ns
SNx4LS241, SNx4LS244 12 18
t
PHL
R
L
= 667 Ω, C
L
= 45 pF 12 18 ns
t
PZL
R
L
= 667 Ω, C
L
= 45 pF 20 30 ns
t
PZH
R
L
= 667 Ω, C
L
= 45 pF 15 23 ns
t
PLZ
R
L
= 667 Ω, C
L
= 5 pF 10 20 ns
t
PHZ
R
L
= 667 Ω, C
L
= 5 pF 15 25 ns
6.8 Switching Characteristics – SNx4S24x
V
CC
= 5 V and T
A
= 25°C (see SN54S24x and SN74S24x Devices)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
PLH
R
L
= 90 Ω, C
L
= 50 pF
SNx4S240 4.5 7
ns
SNx4S241, SNx4S244 6 9
t
PHL
R
L
= 90 Ω, C
L
= 50 pF
SNx4S240 4.5 7
ns
SNx4S241, SNx4S244 6 9
t
PZL
R
L
= 90 Ω, C
L
= 50 pF 10 15 ns
t
PZH
R
L
= 90 Ω, C
L
= 50 pF
SNx4S240 6.5 10
ns
SNx4S241, SNx4S244 8 12
t
PLZ
R
L
= 90 Ω, C
L
= 5 pF 10 15 ns
t
PHZ
R
L
= 90 Ω, C
L
= 5 pF 6 9 ns