- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄360459 > 74HC253 (NXP Semiconductors N.V.) Dual 4-input multiplexer; 3-state PDF資料下載
參數(shù)資料
| 型號： | 74HC253 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Dual 4-input multiplexer; 3-state |
| 中文描述： | 雙路4輸入多路復(fù)用器，三態(tài) |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 50K |
| 代理商： | 74HC253 |
December 1990
2
Philips Semiconductors
Product specification
Dual 4-input multiplexer; 3-state
74HC/HCT253
FEATURES
Non-inverting data path
3-state outputs for bus interface
and multiplex expansion
Common select inputs
Separate output enable inputs
Output capability: bus driver
I
CC
category: MSI
GENERAL DESCRIPTION
The 74HC/HCT253 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT253 have two identical 4-input multiplexers
with 3-state outputs which select two bits from four sources
selected by common data select inputs (S
0
, S
1
).
When the individual output enable (1OE, 2OE) inputs of
the 4-input multiplexers are HIGH, the outputs are forced
to the high impedance OFF-state. The “253” is the logic
implementation of a 2-pole, 4-position switch, where the
position of the switch is determined by the logic levels
applied to S
0
and S
1
.
The logic equations for the outputs are:
1Y = 1OE(1l
0
.S
1
.S
0
+
1I
1
.S
1
.S
0
+
1I
2
.S
1
.S
0
+
1I
3
.S
1
.S
0
)
2Y = 2OE(2l
0
.S
1
.S
0
+
2I
1
.S
1
.S
0
+
2I
2
.S
1
.S
0
+
2I
3
.S
1
.S
0
)
APPLICATIONS
Data selectors
Data multiplexers
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°
C; t
r
= t
f
= 6 ns
Notes
1.
C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W):
P
D
= C
PD
×
V
CC2
×
f
i
+ ∑
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz
f
o
= output frequency in MHz
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
For HC the condition is V
I
= GND to V
CC
For HCT the condition is V
I
= GND to V
CC
1.5 V
2.
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”
.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
t
PHL
/ t
PLH
propagation delay
1I
n
, 2I
n
to nY;
S
n
to nY
input capacitance
power dissipation capacitance per multiplexer
C
L
= 15 pF; V
CC
= 5 V
17
18
3.5
55
17
19
3.5
55
ns
ns
pF
pF
C
I
C
PD
notes 1 and 2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74HCT253 | Dual 4-input multiplexer; 3-state |
| 74HC257 | Quad 2-input multiplexer 3-state |
| 74HCT257 | 3-state |
| 74HCT533LC | 8-Bit D-Type Latch |
| 74HCT534D | Octal D-Type Flip-Flop |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HC253D | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 DUAL 4 TO 1 DATA SELECTOR/MUX 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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74HC253D,652 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 DUAL 4 TO 1 DATA 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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74HC253D,653 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 DUAL 4 TO 1 DATA 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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74HC253D/S400,118 | 制造商:NXP Semiconductors 功能描述:- Tape and Reel |
| 74HC253D652 | 制造商:NXP Semiconductors 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。