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SN74LS240J 数据表(PDF) 8 Page - Texas Instruments

部件名 SN74LS240J
功能描述  OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
Download  24 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74LS240J 数据表(HTML) 8 Page - Texas Instruments

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SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144B – APRIL 1985 – REVISED FEBRUARY 2002
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
SN54S’
SN74S’
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage (see Note 1)
4.5
5
5.5
4.75
5
5.25
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
IOH
High-level output current
–12
–15
mA
IOL
Low-level output current
48
64
mA
External resistance between any input and VCC or ground
40
40
k
TA
Operating free-air temperature (see Note 3)
–55
125
0
70
°C
NOTES:
1. Voltage values are with respect to network ground terminal.
3. An SN54S241J operating at free-air temperature above 116
°C requires a heat sink that provides a thermal resistance from case
to free air, R
θCA, of not more that 40°C/W.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS†
SN54S’
SN74S’
UNIT
PARAMETER
TEST CONDITIONS†
MIN
TYP‡
MAX
MIN
TYP‡
MAX
UNIT
VIK
VCC = MIN,
II = –18 mA
–1.2
–1.2
V
Hysteresis
(VT+ – VT–)
VCC = MIN
0.2
0.4
0.2
0.4
V
VCC = MIN
IOH = –1 mA
VIH = 2 V,
VIL = 0.8 V,
2.7
VOH
VCC = MIN,
IOH = –3 mA
VIH = 2 V,
VIL = 0.8 V,
2.4
3.4
2.4
3.4
V
VCC = MIN,
IOH = MAX
VIH = 2 V,
VIL = 0.5 V,
2
2
VOL
VCC = MIN,
IOL = MAX
VIH = 2 V,
VIL = 0.8 V,
0.55
0.55
V
IOZH
VCC = MAX,
VIL = 0.8 V
VIH = 2 V,
VO = 2.4 V
50
50
µA
IOZL
VCC = MAX,
VIL = 0.8 V
VIH = 2 V,
VO = 0.5 V
–50
–50
µA
II
VCC = MAX,
VI = 5.5 V
1
1
mA
IIH
VCC = MAX,
VI = 2.7 V
50
50
µA
IIL
VCC = MAX
VI =0 5V
Any A
–400
–400
µA
IIL
VCC = MAX,
VI = 0.5 V
Any G
–2
–2
mA
IOS§
VCC = MAX
–50
–225
–50
–225
mA
Outputs high
’S240
80
123
80
135
Outputs high
’S241,’S244
95
147
95
160
ICC
VCC = MAX,
Outputs low
’S240
100
145
100
150
mA
ICC
CC
,
Output open
Outputs low
’S241, ’S244
120
170
120
180
mA
Outputs disabled
’S240
100
145
100
150
Out uts disabled
’S241, ’S244
120
170
120
180
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time, and duration of the short-circuit should not exceed one second.


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