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參數(shù)資料
| 型號： | SN54F240FK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 32Kx8 Nonvolatile SRAM, 5% Voltage Tolerance 28-DIP MODULE 0 to 70 |
| 中文描述： | 八路緩沖器/ 3司機(jī)態(tài)輸出 |
| 文件頁數(shù)： | 3/5頁 |
| 文件大?。?/td> | 72K |
| 代理商： | SN54F240FK |
SN54F240, SN74F240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDFS061A – D2932, MARCH 1987 – REVISED OCTOBER 1993
2–3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
SN54F240
MIN
NOM
SN74F240
MIN
NOM
UNIT
MAX
MAX
VCC
VIH
VIL
IIK
IOH
IOL
TA
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
Input clamp current
–18
–18
mA
High-level output current
– 12
– 15
mA
Low-level output current
48
64
mA
°
C
Operating free-air temperature
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54F240
TYP
SN74F240
TYP
UNIT
MIN
MAX
MIN
MAX
VIK
VCC = 4.5 V,
II = –18 mA
IOH = – 3 mA
IOH = – 12 mA
IOH = – 15 mA
IOH = – 3 mA
IOL = 48 mA
IOL = 64 mA
VO = 2.7 V
VO = 0.5 V
VI = 7 V
VI = 2.7 V
VI = 0.5 V
VO = 0
Outputs high
–1.2
–1.2
V
2.4
3.3
2.4
3.3
VOH
VCC = 4.5 V
2
3.2
V
2
3.1
VCC = 4.75 V,
2.7
VOL
VCC= 4 5 V
VCC = 4.5 V
0.38
0.55
V
0.42
0.55
IOZH
IOZL
II
IIH
IIL
IOS
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
50
50
μ
A
μ
A
mA
μ
A
mA
–50
–50
0.1
0.1
20
20
– 1
– 1
–100
–225
–100
–225
mA
19
29
19
29
ICC
VCC = 5.5 V
Outputs low
Outputs disabled
50
42
75
63
50
42
75
63
mA
All typical values are at VCC = 5 V, TA = 25
°
C.
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
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