- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄360465 > 74HCT182 (NXP Semiconductors N.V.) Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-SOIC -40 to 85 PDF資料下載
參數(shù)資料
| 型號： | 74HCT182 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-SOIC -40 to 85 |
| 中文描述： | 前瞻攜帶發(fā)電機(jī) |
| 文件頁數(shù)： | 2/9頁 |
| 文件大?。?/td> | 68K |
| 代理商： | 74HCT182 |
December 1990
2
Philips Semiconductors
Product specification
Look-ahead carry generator
74HC/HCT182
FEATURES
Provides carry look-ahead across a group of four ALU’s
Multi-level look-ahead for high-speed arithmetic
operation over long word length
Output capability: standard
I
CC
category: MSI
GENERAL DESCRIPTION
The 74HC/HCT182 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/HCT182 carry look-ahead generators accept
up to four pairs of active LOW carry propagate (P
0
, P
1
, P
2
,
P
3
) and carry generate (G
0
, G
1
, G
2
, G
3
) signals and an
active HIGH carry input (C
n
). The devices provide
anticipated active HIGH carries (C
n
+
x
, C
n
+
y
, C
n
+
z
) across
four groups of binary adders.
The “182” also has active LOW carry propagate (P) and
carry generate (G) outputs which may be used for further
levels of look-ahead.
The logic equations provided at the outputs are:
C
n+x
= G
0
+ P
0
C
n
C
n+y
= G
1
+ P
1
G
0
+ P
1
P
0
C
n
C
n+z
= G
2
+ P
2
G
1
+ P
2
P
1
G
0
+ P
2
P
1
P
0
C
n
G
G
3
P
3
G
2
P
3
P
2
G
1
+
+
=
The “182” can also be used with binary ALU’s in an active
LOW or active HIGH input operand mode. The
connections to and from the ALU to the carry look-ahead
generator are identical in both cases.
P
3
P
2
P
1
G
O
+
P
P
3
P
2
P
1
P
0
=
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
P
n
to P
C
n
to any output
P
n
or G
n
to any output
input capacitance
power dissipation capacitance per
package
C
L
= 15 pF; V
CC
= 5 V
11
17
14
3.5
14
21
17
3.5
ns
ns
ns
pF
C
I
C
PD
notes 1 and 2
50
50
pF
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74HC182 | Look-ahead carry generator |
| 74HCT190 | Presettable synchronous BCD decade up/down counter |
| 74HC190 | Presettable synchronous BCD decade up/down counter |
| 74HC190D | Presettable synchronous BCD decade up/down counter |
| 74HC190DB | Presettable synchronous BCD decade up/down counter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HCT191D | 功能描述:計(jì)數(shù)器 IC SYNC BIN U/D COUNTER RoHS:否 制造商:NXP Semiconductors 計(jì)數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計(jì)數(shù)法: 計(jì)數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| 74HCT191D,652 | 功能描述:計(jì)數(shù)器 IC SYNC BIN U/D COUNTER RoHS:否 制造商:NXP Semiconductors 計(jì)數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計(jì)數(shù)法: 計(jì)數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| 74HCT191D,653 | 功能描述:計(jì)數(shù)器 IC SYNC BIN U/D COUNTER RoHS:否 制造商:NXP Semiconductors 計(jì)數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計(jì)數(shù)法: 計(jì)數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| 74HCT191D-T | 功能描述:計(jì)數(shù)器 IC SYNC BIN U/D COUNTER RoHS:否 制造商:NXP Semiconductors 計(jì)數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計(jì)數(shù)法: 計(jì)數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
| 74HCT191N | 功能描述:計(jì)數(shù)器 IC SYNC BIN U/D COUNTER RoHS:否 制造商:NXP Semiconductors 計(jì)數(shù)器類型:Binary Counters 邏輯系列:74LV 位數(shù):10 計(jì)數(shù)法: 計(jì)數(shù)順序: 工作電源電壓:1 V to 5.5 V 工作溫度范圍:- 40 C to + 125 C 封裝 / 箱體:SOT-109 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。