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參數(shù)資料
| 型號(hào)： | 74HC283 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 4-bit binary full adder with fast carry |
| 中文描述： | 4位二進(jìn)制全加器快速進(jìn)行 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 61K |
| 代理商： | 74HC283 |
December 1990
2
Philips Semiconductors
Product specification
4-bit binary full adder with fast carry
74HC/HCT283
FEATURES
High-speed 4-bit binary addition
Cascadable in 4-bit increments
Fast internal look-ahead carry
Output capability: standard
I
CC
category: MSI
GENERAL DESCRIPTION
The 74HC/HCT283 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/HCT283 add two 4-bit binary words (A
n
plus B
n
)
plus the incoming carry. The binary sum appears on the
sum outputs (
∑
1
to
∑
4
) and the out-going carry (C
OUT
)
according to the equation:
C
IN
+
(A
1
+
B
1
)
+
2(A
2
+
B
2
)
+ +
4(A
3
+
B
3
)
+
8(A
4
+
B
4
) =
=
∑
1
+
2
∑
2
+
4
∑
3
+
8
∑
4
+
16C
OUT
Where (
+
) = plus.
Due to the symmetry of the binary add function, the “283”
can be used with either all active HIGH operands (positive
logic) or all active LOW operands (negative logic); see
function table. In case of all active LOW operands the
results
∑
1
to
∑
4
and C
OUT
should be interpreted also as
active LOW. With active HIGH inputs, C
IN
must be held
LOW when no “carry in” is intended. Interchanging inputs
of equal weight does not affect the operation, thus C
IN
, A
1
,
B
1
can be assigned arbitrarily to pins 5, 6, 7, etc.
See the “583” for the BCD version.
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.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
t
PHL
/ t
PLH
propagation delay
C
IN
to
∑
1
C
IN
to
∑
2
C
IN
to
∑
3
C
IN
to
∑
4
A
n
or B
n
to
∑
n
C
IN
to C
OUT
A
n
or B
n
to C
OUT
input capacitance
power dissipation capacitance per package
C
L
= 15 pF; V
CC
= 5 V
16
18
20
23
21
20
20
3.5
88
15
21
23
27
25
23
24
3.5
92
ns
ns
ns
ns
ns
ns
ns
pF
pF
C
I
C
PD
notes 1 and 2
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 74HC283D | 功能描述:邏輯加法器與減法器 4-BIT FULL ADDER W/FAST CARRY RoHS:否 制造商:Texas Instruments 邏輯系列:LS 封裝 / 箱體:PDIP-16 高電平輸出電流:- 0.4 mA 低電平輸出電流:8 mA 傳播延遲時(shí)間:24 ns 工作電源電壓:5 V 最大功率耗散:95 mW 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝:Tube |
| 74HC283D,652 | 功能描述:邏輯加法器與減法器 4-BIT FULL ADDER RoHS:否 制造商:Texas Instruments 邏輯系列:LS 封裝 / 箱體:PDIP-16 高電平輸出電流:- 0.4 mA 低電平輸出電流:8 mA 傳播延遲時(shí)間:24 ns 工作電源電壓:5 V 最大功率耗散:95 mW 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝:Tube |
| 74HC283D,653 | 功能描述:邏輯加法器與減法器 4-BIT FULL ADDER RoHS:否 制造商:Texas Instruments 邏輯系列:LS 封裝 / 箱體:PDIP-16 高電平輸出電流:- 0.4 mA 低電平輸出電流:8 mA 傳播延遲時(shí)間:24 ns 工作電源電壓:5 V 最大功率耗散:95 mW 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝:Tube |
| 74HC283D/AUJ | 制造商:NXP Semiconductors 功能描述:2500 制造商:NXP Semiconductors 功能描述:74HC283D/SO16/REEL13//AU - Tape and Reel 制造商:NXP Semiconductors 功能描述:IC BINARY FULL ADDER 4BIT 16SOIC 制造商:NXP Semiconductors 功能描述:Logic Adder & Subtractor 4-bit binary full adder w/fastcarry |
| 74HC283D652 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP Semiconductors 功能描述: |
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