74HC643 반도체 회로 부품 판매점
Octal bus transceiver 3-state true/inverting
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 Philips |
INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT643
Octal bus transceiver; 3-state;
true/inverting
Product specification
File under Integrated Circuits, IC06
December 1990
Philips Semiconductors
Octal bus transceiver; 3-state;
true/inverting
Product specification
74HC/HCT643
FEATURES
• Octal bidirectional bus interface
• True and inverting 3-state outputs
• Output capability: bus driver
• ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT643 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/HCT643 are octal transceivers featuring true
and inverting 3-state bus compatible outputs in both send
and receive directions.
The “643” features an output enable (OE) input for easy
cascading and a send/receive (DIR) for direction control.
OE controls the outputs so that the buses are effectively
isolated.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns
SYMBOL
PARAMETER
CONDITIONS
tPHL/ tPLH
CI
CI/O
CPD
propagation delay
An to Bn; inverting
Bn to An; true
input capacitance
CL = 15 pF; VCC = 5 V
input/output capacitance
power dissipation capacitance per transceiver notes 1 and 2
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW):
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
TYPICAL
HC HCT
78
8 11
3.5 3.5
10 10
42 44
UNIT
ns
ns
pF
pF
pF
ORDERING INFORMATION
See “74HC/HCT/HCU/HCMOS Logic Package Information”.
December 1990
2
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제조업체: Philips
( philips )
74HC643 transceiver
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[ 74HC643.PDF ]
[ 74HC643 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
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전력반도체 문의 : 010-3582-2743
관련 데이터시트
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