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參數(shù)資料
| 型號(hào)： | 74VHC257T |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
| 中文描述： | 四2通道多路復(fù)用三態(tài) |
| 文件頁(yè)數(shù)： | 4/9頁(yè) |
| 文件大?。?/td> | 70K |
| 代理商： | 74VHC257T |
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Test Conditions
Value
Unit
T
A
= 25
o
C
Min.
Typ.
-40 to 85
o
C
Min.
Max.
10
Max.
10
C
IN
C
OUT
C
PD
Input Capacitance
Output Capacitance
Power Dissipation
Capacitance (note 1)
4
6
pF
pF
pF
23
1)C
PD
isdefined as thevalue oftheIC’sinternal equivalent capacitance whichiscalculated fromtheoperatingcurrent consumption without load.(Referto
TestCircuit).Average operatingcurrent canbeobtained bythefollowingequation.I
CC
(opr)=C
PD
V
CC
f
IN
+I
CC
/4(per Channel)
AC ELECTRICAL CHARACTERISTICS
(Inputt
r
= t
f
=3 ns)
Symbol
Parameter
Test Condition
C
L
(pF)
3.3
(*)
15
3.3
(*)
50
5.0
(**)
15
5.0
(**)
50
3.3
(*)
15
3.3
(*)
50
5.0
(**)
15
5.0
(**)
50
3.3
(*)
15
3.3
(*)
50
5.0
(**)
15
5.0
(**)
50
3.3
(*)
50
5.0
(**)
50
Value
Unit
V
CC
(V)
T
A
= 25
o
C
Min.
Typ.
-40 to 85
o
C
Min.
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Max.
9.3
12.8
5.9
7.9
11.0
14.5
6.8
8.8
10.5
14.0
6.8
8.8
12.0
7.9
Max.
11.0
14.5
7.0
9.0
13.0
16.5
8.0
10.0
12.5
16.0
8.0
10.0
13.5
9.0
t
PLH
t
PHL
Propagation Delay
Time
A, B to Y
5.8
8.3
3.6
5.1
7.0
9.5
4.0
5.5
6.7
9.2
3.6
5.1
8.6
5.7
ns
t
PLH
t
PHL
Propagation Delay
Time
SELECT to Y
ns
t
PZL
t
PZH
Output Enable Time
ns
t
PLZ
t
PHZ
Output Disable Time
ns
(*) Voltagerangeis3.3V
±
0.3V
(**) Voltagerange is 5V
±
0.5V
DYNAMIC SWITCHING CHARACTERISTICS
Symbol
Parameter
Test Conditions
V
CC
(V)
Value
Unit
T
A
= 25
o
C
Min.
Typ.
-40 to 85
o
C
Min.
Max.
0.8
Max.
V
OLP
V
OLV
V
IHD
Dynamic Low Voltage
Quiet Output (note 1, 2)
5.0
C
L
= 50 pF
0.3
-0.3
V
-0.8
3.5
Dynamic High Voltage
Input (note 1, 3)
Dynamic Low Voltage
Input (note 1, 3)
1)Worstcasepackage.
2)Maxnumber ofoutputsdefined as(n).Datainputsaredriven0Vto5.0V,(n-1)outputs switching andone outputatGND.
3)Maxnumber ofdatainputs (n)switching.(n-1)switching0Vto5.0V. Inputsunder testswitching: 5.0Vtothreshold (V
ILD
),0Vtothreshold (V
IHD
),f=1MHz.
5.0
V
ILD
5.0
1.5
74VHC257
4/9
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PDF描述 |
|---|---|
| 74VHC273 | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
| 74VHC273M | Quadruple 2-Input Positive-AND Gates 14-PDIP -40 to 85 |
| 74VHC273T | OCTAL D-TYPE FLIP FLOP WITH CLEAR |
| 74VHC273SJ | Octal D-Type Flip-Flop |
| 74VHC273 | Octal D-Type Flip-Flop |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74VHC257TTR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Quad 2-Ch Multiplexr 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(shí)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74VHC27 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TRIPLE 3-INPUT NOR GATE |
| 74VHC27_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TRIPLE 3-INPUT NOR GATE |
| 74VHC273 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:OCTAL D-TYPE FLIP FLOP WITH CLEAR |
| 74VHC273_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:OCTAL D-TYPE FLIP FLOP WITH CLEAR |
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