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參數(shù)資料
| 型號(hào)： | CY5474FCT138T |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 1-of-8 Decoder |
| 中文描述： | 1 - 8解碼器 |
| 文件頁(yè)數(shù)： | 5/7頁(yè) |
| 文件大?。?/td> | 107K |
| 代理商： | CY5474FCT138T |
CY54FCT138T, CY74FCT138T
1-OF-8 DECODERS
SCCS013B
–
MAY 1994
–
REVISED OCTOBER 2001
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
CY54FCT138T
MIN
TYP
CY74FCT138T
MIN
TYP
UNIT
MAX
MAX
VCC = 5.5 V,
Outputs open,
Switch E1E2or
Switch E1, E2, or
E3
One output
switching
at f1 = 10 MHz
at 50% duty
cycle
VIN
≤
0.2 V or
VIN
≥
VCC
–
0.2 V
0.7
1.4
VIN = 3.4 V or GND
1
2.4
mA
IC#
VCC = 5.25 V,
Outputs open,
Switch E1E2or
Switch E1, E2, or
E3
One output
switching
at f1 = 10 MHz
at 50% duty
cycle
VIN
≤
0.2 V or
VIN
≥
VCC
–
0.2 V
0.7
1.4||
VIN = 3.4 V or GND
1
2.4||
Ci
Co
5
10
5
10
pF
9
12
9
12
pF
Typical values are at VCC = 5 V, TA = 25
°
C.
#IC
= ICC +
ICC
×
DH
×
NT + ICCD (f0/2 + f1
×
N1)
Where:
IC
= Total supply current
ICC
= Power-supply current with CMOS input levels
ICC= Power-supply current for a TTL high input (VIN = 3.4 V)
DH
= Duty cycle for TTL inputs high
NT
= Number of TTL inputs at DH
ICCD= Dynamic current caused by an input transition pair (HLH or LHL)
f0
= Clock frequency for registered devices, otherwise zero
f1
= Input signal frequency
N1
= Number of inputs changing at f1
All currents are in milliamperes and all frequencies are in megahertz.
||Values for these conditions are examples of the ICC formula.
switching characteristics over operating free-air temperature range (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
CY54FCT138T
CY54FCT138CT
UNIT
(OUTPUT)
MIN
1.5
MAX
MIN
1.5
MAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
A
O
12
6
ns
1.5
12
1.5
6
E1 or E2
O
1.5
12.5
1.5
6.1
ns
1.5
12.5
1.5
6.1
E3
O
1.5
1.5
12.5
12.5
1.5
1.5
6.1
6.1
ns
switching characteristics over operating free-air temperature range (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
CY74FCT138T
MIN
1.5
CY74FCT138AT
MIN
1.5
CY74FCT138CT
MIN
1.5
UNIT
(OUTPUT)
MAX
MAX
5.8
MAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
A
O
9
5
ns
1.5
9
1.5
5.8
1.5
5
E1 or E2
O
1.5
9
1.5
5.9
1.5
5
ns
1.5
9
1.5
5.9
1.5
5
E3
O
1.5
1.5
9
9
1.5
1.5
5.9
5.9
1.5
1.5
5
5
ns
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