參數(shù)資料
型號(hào)： 74HCT283
廠商： NXP Semiconductors N.V.
英文描述： 8-Bit Parallel-Out Serial Shift Registers 14-SOIC -40 to 85
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
文件大小： 61K
代理商： 74HCT283
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
相關(guān)PDF資料
PDF描述
74HC283 4-bit binary full adder with fast carry
74HCT299 8-Bit Parallel-Out Serial Shift Registers 14-PDIP -40 to 85
74HC299 8-bit universal shift register; 3-state
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74HCT30 8-input NAND gate
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
74HCT283D,652 制造商:NXP Semiconductors 功能描述:
74HCT299D 功能描述:計(jì)數(shù)器移位寄存器 8-BIT UNIVERSAL SHFT REG 3-S RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel
74HCT299D,652 功能描述:計(jì)數(shù)器移位寄存器 8-BIT UNIVERSAL SHFT RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel
74HCT299D,653 功能描述:計(jì)數(shù)器移位寄存器 8-BIT UNIVERSAL SHFT RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel
74HCT299DB 功能描述:計(jì)數(shù)器移位寄存器 8-BIT UNIVERSAL SHFT REG 3-S RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel
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