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74ACT646SPC Datasheet

  • 74ACT646SPC

  • Single 8-bit Bus Transceiver

  • 9頁

  • ETC

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74AC646 鈥?74ACT646 Octal Transceiver/Register with 3-STATE Outputs
November 1988
Revised October 2000
74AC646 鈥?74ACT646
Octal Transceiver/Register with 3-STATE Outputs
General Description
The AC/ACT646 consist of registered bus transceiver cir-
cuits, with outputs, D-type flip-flops and control circuitry
providing multiplexed transmission of data directly from the
input bus or from the internal storage registers. Data on the
A or B bus will be loaded into the respective registers on
the LOW-to-HIGH transition of the appropriate clock pin
(CPAB or CPBA). The four fundamental data handling
functions available are illustrated in Figures 1, 2, 3, and
Figure 4.
Features
s
Independent registers for A and B buses
s
Multiplexed real-time and stored data transfers
s
3-STATE outputs
s
300 mil dual-in-line package
s
Outputs source/sink 24 mA
s
ACT646 has TTL compatible inputs
Ordering Code:
Order Number
74AC646SC
74AC646SPC
74ACT646SC
74ACT646SPC
Package Number
M24B
N24C
M24B
N24C
Package Description
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Device also available in Tape and Reel. Specify by appending suffix letter 鈥淴鈥?to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
Pin Descriptions
Pin Names
A
0
鈥揂
7
B
0
鈥揃
7
CPAB, CPBA
SAB, SBA
G
DIR
FACT錚?is a trademark of Fairchild Semiconductor Corporation.
Description
Data Register A Inputs
Data Register A Outputs
Data Register B Inputs
Data Register B Outputs
Clock Pulse Inputs
Transmit/Receive Inputs
Output Enable Input
Direction Control Input
漏 2000 Fairchild Semiconductor Corporation
DS010132
www.fairchildsemi.com

74ACT646SPC 產(chǎn)品屬性

  • Fairchild Semiconductor

  • CMOS

  • ACT

  • 8

  • TTL

  • CMOS

  • 3-State

  • - 24 mA

  • 24 mA

  • 14.5 ns

  • 5.5 V

  • 4.5 V

  • + 85 C

  • PDIP-24

  • Rail

  • Bus Transceiver / Register

  • - 40 C

  • Through Hole

  • 4

  • Non-Inverting

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