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參數資料
| 型號： | SN54LS393J |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER |
| 中文描述： | LS SERIES, ASYN NEGATIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, CDIP14 |
| 封裝： | CERAMIC, DIP-14 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 71K |
| 代理商： | SN54LS393J |
5-1
FAST AND LS TTL DATA
DUAL DECADE COUNTER;
DUAL 4-STAGE
BINARY COUNTER
The SN54/74LS390 and SN54/74LS393 each contain a pair of high-speed
4-stage ripple counters. Each half of the LS390 is partitioned into a
divide-by-two section and a divide-by five section, with a separate clock input
for each section. The two sections can be connected to count in the 8.4.2.1
BCD code or they can count in a biquinary sequence to provide a square wave
(50% duty cycle) at the final output.
Each half of the LS393 operates as a Modulo-16 binary divider, with the last
three stages triggered in a ripple fashion. In both the LS390 and the LS393,
the flip-flops are triggered by a HIGH-to-LOW transition of their CP inputs.
Each half of each circuit type has a Master Reset input which responds to a
HIGH signal by forcing all four outputs to the LOW state.
Dual Versions of LS290 and LS293
LS390 has Separate Clocks Allowing
÷
2,
÷
2.5,
÷
5
Individual Asynchronous Clear for Each Counter
Typical Max Count Frequency of 50 MHz
Input Clamp Diodes Minimize High Speed Termination Effects
CONNECTION DIAGRAM DIP
(TOP VIEW)
SN54/74LS390
MR
Q0
SN54/74LS393
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
14
13
12
11
10
9
1
2
3
4
5
6
Q3
8
7
VCC
CP
MR
Q0
Q1
Q2
Q3
CP
MR
Q0
Q1
Q2
GND
14
13
12
11
10
9
1
2
3
4
5
6
7
16
15
8
VCC
CP0
CP0
CP1
Q2
Q1
Q3
MR
Q0
CP1
Q1
Q2
Q3
GND
SN54/74LS390
SN54/74LS393
LOW POWER SCHOTTKY
ORDERING INFORMATION
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
Ceramic
Plastic
SOIC
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
16
1
D SUFFIX
SOIC
CASE 751B-03
DUAL DECADE COUNTER;
DUAL 4-STAGE
BINARY COUNTER
J SUFFIX
CERAMIC
CASE 632-08
N SUFFIX
PLASTIC
CASE 646-06
14
1
14
1
14
1
D SUFFIX
SOIC
CASE 751A-02
相關PDF資料 |
PDF描述 |
|---|---|
| SN74LS393D | DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER |
| SN74LS393N | DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER |
| SN54LS395AFK | 1-of-8 Decoder/Demultiplexer; Package: SOIC 16 LEAD; No of Pins: 16; Container: Tape and Reel; Qty per Container: 2500 |
| SN54LS395AW | 1-of-8 Decoder/Demultiplexer; Package: TSSOP-16; No of Pins: 16; Container: Tape and Reel; Qty per Container: 2500 |
| SN54LS396FK | 1-of-8 Decoder/Demultiplexer; Package: PDIP-16; No of Pins: 16; Container: Rail; Qty per Container: 500 |
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