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MM74HC393SJ 参数 Datasheet PDF下载

MM74HC393SJ图片预览
型号: MM74HC393SJ
PDF下载: 下载PDF文件 查看货源
内容描述: 双4位二进制计数器 [Dual 4-Bit Binary Counter]
分类和应用: 计数器触发器逻辑集成电路光电二极管
文件页数/大小: 8 页 / 90 K
品牌: FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
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MM74HC393 Dual 4-Bit Binary Counter
September 1983
Revised January 2005
MM74HC393
Dual 4-Bit Binary Counter
General Description
The MM74HC393 counter circuits contain independent rip-
ple carry counters and utilize advanced silicon-gate CMOS
technology. The MM74HC393 contains two 4-bit ripple
carry binary counters, which can be cascaded to create a
single divide-by-256 counter.
Each of the two 4-bit counters is incremented on the HIGH-
to-LOW transition (negative edge) of the clock input, and
each has an independent clear input. When clear is set
HIGH all four bits of each counter are set to a low level.
This enables count truncation and allows the implementa-
tion of divide-by-N counter configurations.
Each of the counters outputs can drive 10 low power
Schottky TTL equivalent loads. This counter is functionally
as well as pin equivalent to the 74LS393. All inputs are pro-
tected from damage due to static discharge by diodes to
V
CC
and ground.
Features
s
Typical operating frequency: 50 MHz
s
Typical propagation delay: 13 ns (Ck to Q
A
)
s
Wide operating supply voltage range: 2–6V
s
Low input current:
<
1
µ
A
s
Low quiescent supply current: 80
µ
A maximum
(74HC Series)
s
Fanout of 10 LS-TTL loads
Ordering Code:
Order Number
MM74HC393M
MM74HC393SJ
MM74HC393MTC
MM74HC393N
Package
Number
M14A
M14D
MTC14
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Pb-Free 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
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Connection Diagram
Pin Assignments for DIP, SOIC, SOP and TSSOP
Top View
© 2005 Fairchild Semiconductor Corporation
DS005337
www.fairchildsemi.com