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參數(shù)資料
| 型號： | CY74FCT257T |
| 英文描述： | Quadruple 1-of-2 Data Selectors/Multiplexers with 3-State Outputs |
| 中文描述： | 四重1 - 2數(shù)據(jù)選擇器/多路復用3態(tài)輸出 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 102K |
| 代理商： | CY74FCT257T |
CY74FCT823T
9-BIT BUS-INTERFACE REGISTER
SCCS069
–
OCTOBER 2001
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIK
VCC = 4.75 V,
IIN =
–
18 mA
IOH =
–
32 mA
IOH =
–
15 mA
IOL = 64 mA
–
0.7
–
1.2
V
VOH
VCC = 4.75 V
4 75 V
2
V
2.4
3.3
VOL
Vhys
II
IIH
IIL
IOZH
IOZL
IOS
Ioff
ICC
ICC
VCC = 4.75 V,
All inputs
0.3
0.55
V
0.2
V
μ
A
μ
A
μ
A
μ
A
μ
A
mA
μ
A
mA
VCC = 5.25 V,
VCC = 5.25 V,
VCC = 5.25 V,
VCC = 5.25 V,
VCC = 5.25 V,
VCC = 0 V,
VCC = 5.25 V,
VCC = 5.25 V, VIN = 3.4 V
§
, f1 = 0, Outputs open
VCC = 5.25 V, One bit switching at 50% duty cycle, Outputs open,
OE = EN = GND, VIN
≤
0.2 V or VIN
≥
VCC
–
0.2 V
VIN = VCC
VIN = 2.7 V
VIN = 0.5 V
VOUT = 2.7 V
VOUT = 0.5 V
VOUT = 0 V
VOUT = 4.5 V
VIN
≤
0.2 V,
5
±
1
±
1
10
–
10
–
60
–
120
–
225
±
1
0.2
VIN
≥
VCC
–
0.2 V
0.1
0.5
2
mA
ICCD
0.06
0.12
mA/
MHz
One bit switching
at f1 = 5 MHz
at 50% duty cycle
VIN
≤
0.2 V or
VIN
≥
VCC
–
0.2 V
VIN = 3.4 V or GND
VIN
≤
0.2 V or
VIN
≥
VCC
–
0.2 V
VIN = 3.4 V or GND
0.7
1.4
VCC = 5.25 V,
Outputs open,
OE = EN = GND
1.2
3.4
mA
IC#
Eight bits switching
at f1 = 2.5 MHz
at 50% duty cycle
1.6
3.2||
3.9
12.2||
Ci
Co
5
10
pF
9
12
pF
Typical values are at VCC = 5 V, TA = 25
°
C.
Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or
sample-and-hold techniques are preferable to minimize internal chip heating and more accurately reflect operational values. Otherwise, prolonged
shorting of a high output can raise the chip temperature well above normal and cause invalid readings in other parametric tests. In any sequence
of parameter tests, IOS tests should be performed last.
§
Per TTL-driven input (VIN = 3.4 V); all other inputs at VCC or GND
This parameter is derived for use in total power-supply calculations.
#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.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CY74FCT257TQC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CY74FCT257TQCT | 功能描述:編碼器、解碼器、復用器和解復用器 Quad 1-of-2 Data Slct/Mltpx W/3St Otp RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| CY74FCT257TQCTE4 | 功能描述:編碼器、解碼器、復用器和解復用器 Quad 1-of-2 Data Slct/Mltpx W/3St Otp RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| CY74FCT257TQCTG4 | 功能描述:編碼器、解碼器、復用器和解復用器 Quad 1-of-2 Data Sel Multipl RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| CY74FCT257TQSOP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS |
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