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M74HC125 PDF预览

M74HC125

更新时间: 2024-11-22 22:46:35
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飞兆/仙童 - FAIRCHILD /
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6页 84K
描述
3-STATE Quad Buffers

M74HC125 数据手册

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September 1983  
Revised February 1999  
MM74HC125/MM74HC126  
3-STATE Quad Buffers  
condition, whereas the MM74HC126 require the control  
input to be low to put the output into high impedance.  
General Description  
The MM74HC125 and MM74HC126 are general purpose  
3-STATE high speed non-inverting buffers utilizing  
advanced silicon-gate CMOS technology. They have high  
drive current outputs which enable high speed operation  
even when driving large bus capacitances. These circuits  
possess the low power dissipation of CMOS circuitry, yet  
have speeds comparable to low power Schottky TTL cir-  
cuits. Both circuits are capable of driving up to 15 low  
power Schottky inputs.  
All inputs are protected from damage due to static dis-  
charge by diodes to VCC and ground.  
Features  
Typical propagation delay: 13 ns  
Wide operating voltage range: 2–6V  
Low input current: 1 µA maximum  
Low quiescent current: 80 µA maximum (74HC)  
Fanout of 15 LS-TTL loads  
The MM74HC125 require the 3-STATE control input C to  
be taken high to put the output into the high impedance  
Ordering Code:  
Order Number Package Number  
Package Description  
MM74HC125M  
MM74HC125SJ  
MM74HC125MTC  
MM74HC125N  
MM74HC126M  
MM74HC126SJ  
MM74HC126MTC  
MM74HC126N  
M14A  
M14D  
MTC14  
N14A  
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow Body  
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide  
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide  
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide  
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow Body  
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide  
M14A  
M14D  
MTC14  
N14A  
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide  
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide  
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. (Tape and Reel not available in N14A.)  
Connection Diagrams  
Pin Assignments for DIP, SOIC, SOP and TSSOP  
Top View (MM74HC126)  
Top View (MM74HC125)  
Truth Tables  
Inputs  
Output  
Inputs  
Output  
A
H
L
C
L
Y
H
L
A
H
L
C
H
H
L
Y
H
L
L
X
H
Z
X
Z
© 1999 Fairchild Semiconductor Corporation  
DS005308.prf  
www.fairchildsemi.com  

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