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參數(shù)資料
| 型號(hào)： | 74HCT42 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Quadruple D-Type Flip-Flops With Clear 16-SOIC -40 to 85 |
| 中文描述： | BCD碼為十進(jìn)制解碼器1 - 10 |
| 文件頁(yè)數(shù)： | 2/6頁(yè) |
| 文件大小： | 41K |
| 代理商： | 74HCT42 |
December 1990
2
Philips Semiconductors
Product specification
BCD to decimal decoder (1-of-10)
74HC/HCT42
FEATURES
Mutually exclusive outputs
1-of-8 demultiplexing capability
Outputs disabled for input codes above nine
Output capability: standard
I
CC
category: MSI
GENERAL DESCRIPTION
The 74HC/HCT42 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/HCT42 decoders accept four active HIGH BCD
inputs and provide 10 mutually exclusive active LOW
outputs. The active LOW outputs facilitate addressing
other MSI circuits with active LOW input enables.
The logic design of the “42” ensures that all outputs are
HIGH when binary codes greater than nine are applied to
the inputs.
The most significant input (A
3
) produces an useful inhibit
function when the “42” is used as a 1-of-8 decoder. The A
3
input can also be used as the data input in an 8-output
demultiplexer application.
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
C
I
C
PD
propagation delay A
n
to Y
n
input capacitance
power dissipation capacitance per package
C
L
= 15 pF; V
CC
= 5 V
14
3.5
37
17
3.5
37
ns
pF
pF
notes 1 and 2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74HC42 | BCD to decimal decoder 1-of-10 |
| 74HC42DB | BCD to decimal decoder 1-of-10 |
| 74HC42PW | BCD to decimal decoder 1-of-10 |
| 74HCT42DB | BCD to decimal decoder 1-of-10 |
| 74HCT42PW | Quadruple D-Type Flip-Flops With Clear 16-SOIC -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HCT423BQ | 制造商:NXP Semiconductors 功能描述:Bulk 制造商:NXP Semiconductors 功能描述:IC DUAL RETRIG MULTVIB DHVQ 制造商:NXP Semiconductors 功能描述:Monostable Multivibrator Dual 16-Pin DHVQFN EP T/R |
| 74HCT423BQ,115 | 功能描述:單穩(wěn)態(tài)多諧振蕩器 DUAL RETRIG MONOSTBL RoHS:否 制造商:Texas Instruments 每芯片元件:1 邏輯系列:LVC 邏輯類型:Monostable Multivibrator 封裝 / 箱體:SSOP-8 傳播延遲時(shí)間:18.6 ns 高電平輸出電流:- 32 mA 低電平輸出電流:32 mA 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| 74HCT423BQ-G | 功能描述:單穩(wěn)態(tài)多諧振蕩器 DUAL RETRIG MONOSTBL MULTI RoHS:否 制造商:Texas Instruments 每芯片元件:1 邏輯系列:LVC 邏輯類型:Monostable Multivibrator 封裝 / 箱體:SSOP-8 傳播延遲時(shí)間:18.6 ns 高電平輸出電流:- 32 mA 低電平輸出電流:32 mA 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| 74HCT423D | 功能描述:單穩(wěn)態(tài)多諧振蕩器 DUAL RETGIG MONOSTBL MULTI RoHS:否 制造商:Texas Instruments 每芯片元件:1 邏輯系列:LVC 邏輯類型:Monostable Multivibrator 封裝 / 箱體:SSOP-8 傳播延遲時(shí)間:18.6 ns 高電平輸出電流:- 32 mA 低電平輸出電流:32 mA 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| 74HCT423D,112 | 功能描述:單穩(wěn)態(tài)多諧振蕩器 DUAL RETGIG MONOSTBL RoHS:否 制造商:Texas Instruments 每芯片元件:1 邏輯系列:LVC 邏輯類型:Monostable Multivibrator 封裝 / 箱體:SSOP-8 傳播延遲時(shí)間:18.6 ns 高電平輸出電流:- 32 mA 低電平輸出電流:32 mA 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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