參數(shù)資料
型號(hào)： 7403
廠商： Fairchild Semiconductor Corporation
英文描述： Quad 2-Input NAND Gates with Open-Collector Outputs
中文描述： 四2輸入與非門(mén)與集電極開(kāi)路輸出
文件頁(yè)數(shù)： 28/28頁(yè)
文件大?。?/td> 163K
代理商： 7403
September 1993
28
Philips Semiconductors
Product specification
4-Bit x 64-word FIFO register; 3-state
74HC/HCT7403
Sequence 2 (FIFO
B
runs full)
After the MR pulse, a series of 64 SI pulses are applied. When 64 words are shifted in, DIR
B
remains LOW due to FIFO
B
being full (5). DOR
A
goes LOW due to FIFO
A
being empty.
Sequence 3 (FIFO
A
runs full)
When 65 words are shifted in, DOR
A
remains HIGH due to valid data remaining at the output of FIFO
A
. Q
nA
remains
HIGH, being the polarity of the 65th data word (6). After the 128th SI pulse, DIR remains LOW and both FIFOs are full
(7). Additional pulses have no effect.
Sequence 4 (both FIFOs full, starting SHIFT-OUT process)
SI
A
is held HIGH and two SO
B
pulses are applied (8). These pulses shift out two words and thus allow two empty
locations to bubble-up to the input stage of FIFO
B
, and proceed to FIFO
A
(9). When the first empty location arrives at the
input of FIFO
A
, a DIR
A
pulse is generated (10) and a new word is shifted into FIFO
A
. SI
A
is made LOW and now the
second empty location reaches the input stage of FIFO
A
, after which DIR
A
remains HIGH (11).
Sequence 5 (FIFO
A
runs empty)
At the start of sequence 5 FIFO
A
contains 63 valid words due to two words being shifted out and one word being shifted
in, in sequence 4. An additional series of SO
B
pulses are applied. After 63 SO
B
pulses, all words from FIFO
A
are shifted
into FIFO
B
. DOR
A
remains LOW (12).
Sequence 6 (FIFO
B
runs empty)
After the next SO
B
pulse, DIR
B
remains HIGH due to the input stage of FIFO
B
being empty. After another 63 SO
B
pulses,
DOR
B
remains LOW due to both FIFOs being empty (14). Additional SO
B
pulses have no effect. The last word remains
available at the output Q
n
.
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
相關(guān)PDF資料
PDF描述
74HC7404 5-Bit x 64-word FIFO register; 3-state
74HC7404D 5-Bit x 64-word FIFO register; 3-state
74HC7404N 5-Bit x 64-word FIFO register; 3-state
74HCT7404 Dual 4-Input Positive-NAND Gates 14-TSSOP -40 to 85
74HCT7404D 5-Bit x 64-word FIFO register; 3-state
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
7403 WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
7403 制造商:Thomas & Betts 功能描述:GROMMET GLAND
74030 制造商:MYRRA 功能描述:TRANSFORMER EE25 30W 制造商:Myrra 功能描述:TRANSFORMER, EE25, 30W 制造商:MYRRA 功能描述:TRANSFORMER, EE25, 30W; Primary Voltages:65V to 130V; Secondary Voltages:5V, 2 x 12V; Current Rating:3A; Power Rating:30W; Plug Type:-; SVHC:No SVHC (19-Dec-2012); AC Power:30W; External Depth:27mm; External Length / Height:21mm; ;RoHS Compliant: Yes
74030 制造商:MYRRA 功能描述:TRANSFORMER EE25 30W
74030 制造商:Myrra 功能描述:TRANSFORMER, 5V/12V, 30W, EE25
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