參數(shù)資料
型號(hào): 933714860652
廠商: NXP SEMICONDUCTORS
元件分類(lèi): 編、解碼器及復(fù)用、解復(fù)用
英文描述: HC/UH SERIES, DECIMAL DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封裝: SOT-109, SO-16
文件頁(yè)數(shù): 3/10頁(yè)
文件大小: 115K
代理商: 933714860652
December 1990
2
Philips Semiconductors
Product specication
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
ICC 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 (A3) produces an useful inhibit
function when the “42” is used as a 1-of-8 decoder. The A3
input can also be used as the data input in an 8-output
demultiplexer application.
QUICK REFERENCE DATA
GND = 0 V; Tamb =25 °C; tr =tf = 6 ns
Notes
1. CPD is used to determine the dynamic power dissipation (PD in W):
PD =CPD × VCC2 × fi +∑ (CL × VCC2 × fo) where:
fi = input frequency in MHz
fo = output frequency in MHz
∑ (CL × VCC2 × fo) = sum of outputs
CL = output load capacitance in pF
VCC = supply voltage in V
2. For HC the condition is VI = GND to VCC
For HCT the condition is VI = GND to VCC 1.5 V
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
tPHL/ tPLH
propagation delay An to Yn
CL = 15 pF; VCC = 5 V
14
17
ns
CI
input capacitance
3.5
pF
CPD
power dissipation capacitance per package
notes 1 and 2
37
pF
相關(guān)PDF資料
PDF描述
933669790652 HC/UH SERIES, DECIMAL DECODER/DRIVER, INVERTED OUTPUT, PDIP16
933715340652 HCT SERIES, DECIMAL DECODER/DRIVER, INVERTED OUTPUT, PDSO16
0559-6200-06 ISDN S-INTERFACE TRANSFORMERS
0559-6200-07 ISDN S-INTERFACE TRANSFORMERS
0559-6200-08 ISDN S-INTERFACE TRANSFORMERS
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