Datasheet.kr   

DM2503J 데이터시트 PDF




National Semiconductor에서 제조한 전자 부품 DM2503J은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 DM2503J 자료 제공

부품번호 DM2503J 기능
기능 Successive Approximation Registers
제조업체 National Semiconductor
로고 National Semiconductor 로고


DM2503J 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.



전체 8 페이지수

미리보기를 사용할 수 없습니다

DM2503J 데이터시트, 핀배열, 회로
November 1995
DM2502 DM2503 DM2504 Successive Approximation
Registers
General Description
The DM2502 DM2503 and DM2504 are 8-bit and 12-bit
TTL registers designed for use in successive approximation
A D converters These devices contain all the logic and
control circuits necessary in combination with a D A con-
verter to perform successive approximation analog-to-digital
conversions
The DM2502 has 8 bits with serial capability and is not ex-
pandable The DM2503 has 8 bits and is expandable with-
out serial capability The DM2504 has 12 bits with serial
capability and expandability
All three devices are available in ceramic DIP ceramic flat-
pak and molded Epoxy-B DIPs The DM2502 DM2503 and
DM2504 operate over b55 C to a125 C the DM2502C
DM2503C and DM2504C operate over 0 C to a70 C
Features
Y Complete logic for successive approximation A D con-
verters
Y 8-bit and 12-bit registers
Y Capable of short cycle or expanded operation
Y Continuous or start-stop operation
Y Compatible with D A converters using any logic code
Y Active low or active high logic outputs
Y Use as general purpose serial-to-parallel converter or
ring counter
Logic Diagram
Connection Diagrams (Dual-In-Line and Flat Packages)
DM2502 DM2503
DM2504
Order Number DM2502J DM2502CJ DM2503J
or DM2503CJ
See NS Package J16A
Order Number DM2502CN or DM2503CN
See NS Package N16A
Order Number DM2502W DM2502CW DM2503W
or DM2503CW
See NS Package W16A
Order Number DM2504F or DM2504CJ
See NS Package F24D
Order Number DM2504J or DM2504CJ
See NS Package J24A
Order Number DM2504CN
See NS Package N24A
TL F 5702 – 1
C1995 National Semiconductor Corporation TL F 5702
RRD-B30M115 Printed in U S A




DM2503J pdf, 반도체, 판매, 대치품
Application Information (Continued)
Definition of Terms
SHORT CYCLE
If all bits are not required the register may be truncated and
conversion time saved by using a register output going low
rather then the QCC signal to indicate the end of conversion
If the register is truncated and operated in the continuous
conversion mode a lock-up condition may occur on power
turn-on This condition can be avoided by making the start
input the OR function of QCC and the appropriate register
output
COMPARATOR BIAS
To minimize the digital error below g LSB the compara-
tor must be biased If a D A converter is used which re-
quires a low voltage level to turn on the comparator should
be biased a LSB If the D A converter requires a high
logic level to turn on the comparator must be biased b
LSB
CP The clock input of the register
D The serial data input of the register
DO The serial data out (The D input delayed one bit)
E The register enable This input is used to expand the
length of the register and when high forces the Q7 (11)
register output high and inhibits conversion When not used
for expansion the enable is held at a low logic level
(ground)
Qi ie7 (11) to 0 The outputs of the register
QCC The conversion complete output This output remains
high during a conversion and goes low when a conversion is
complete
Q7 (11) The true output of the MSB of the register
Q7 (11) The complement output of the MSB of the register
S The start input If the start input is held low for at least a
clock period the register will be reset to Q7 (11) low and all
the remaining outputs high A start pulse that is low for a
shorter period of time can be used if it meets the set-up time
requirements of the S input
Truth Table
DM2502 DM2503
Time
Inputs
Outputs1
tn D S E2 D03 Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 QCC
0 XLL X X X X X X X X X X
1
D7 H
L
X
LHHHHHHH
H
2
D6 H
L
D7 D7
L
H
H
H
H
H
H
H
3
D5 H
L
D6 D7 D6
L
H
H
H
H
H
H
4
D4 H
L
D5 D7 D6 D5
L
H
H
H
H
H
5
D3 H
L
D4 D7 D6 D5 D4
L
H
H
H
H
6
D2 H
L
D3 D7 D6 D5 D4 D3
L
H
H
H
7
D1 H
L
D2 D7 D6 D5 D4 D3 D2
L
H
H
8
D0 H
L
D1 D7 D6 D5 D4 D3 D2 D1
L
H
9
XHL
D0 D7 D6 D5 D4 D3 D2 D1 D0
L
10 X X L X D7 D6 D5 D4 D3 D2 D1 D0 L
X X H X H NC NC NC NC NC NC
Note 1 Truth table for DM2504 is extended to include 12 outputs
H e High Voltage Level
Note 2 Truth table for DM2502 does not include E column or last line in truth table shown
L e Low Voltage Level
Note 3 Truth table for DM2503 does not include D0 column
X e Don’t Care
NC e No Change
Typical Applications
Active High
BCD Illegal Code Suppression
Active Low
NC
NC
TL F 5702 – 3
4

4페이지










DM2503J 전자부품, 판매, 대치품
Physical Dimensions inches (millimeters) (Continued)
Order Number DM2504J or DM2504CJ
NS Package Number J24A
Order Number DM2502CM or DM2503CN
NS Package Number N16A
7

7페이지


구       성 총 8 페이지수
다운로드[ DM2503J.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
DM2503

DM2502 DM2503 DM2504 Successive Approximation Registers (Rev. A)

Texas Instruments
Texas Instruments
DM2503CJ

Successive Approximation Registers

National Semiconductor
National Semiconductor

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵