MC14549 ONSEMI [ON Semiconductor], MC14549 Datasheet

no-image

MC14549

Manufacturer Part Number
MC14549
Description
Successive Approximation Registers
Manufacturer
ONSEMI [ON Semiconductor]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC14549BCL
Manufacturer:
VPT
Quantity:
16
Part Number:
MC14549BCP
Quantity:
120
Part Number:
MC14549BCP
Manufacturer:
MOT
Quantity:
6 227
Part Number:
MC14549BDWR2G
Manufacturer:
ON/安森美
Quantity:
20 000
registers are 8–bit registers providing all the digital control and storage
necessary for successive approximation analog–to–digital conversion
systems. These parts differ in only one control input. The Master Reset
(MR) on the MC14549B is required in the cascaded mode when more
than 8 bits are desired. The Feed Forward (FF) of the MC14559B is
used for register shortening where End–of–Conversion (EOC) is
required after less than eight cycles.
analog–to–digital conversion, with serial and parallel outputs.
1. Maximum Ratings are those values beyond which damage to the device
2. Temperature Derating:
static voltages or electric fields. However, precautions must be taken to avoid
applications of any voltage higher than maximum rated voltages to this
high–impedance circuit. For proper operation, V
to the range V
either V
MAXIMUM RATINGS
August, 2000 – Rev. 4
Symbol
The MC14549B and MC14559B successive approximation
Applications for the MC14549B and MC14559B include
This device contains protection circuitry to guard against damage due to high
Unused inputs must always be tied to an appropriate logic voltage level (e.g.,
MC1408 8–Bit D/A Converter
TTL Load or 2 HTL Loads Over the Rated Temperature Range
Totally Synchronous Operation
All Outputs Buffered
Single Supply Operation
Serial Output
Retriggerable
Compatible with a Variety of Digital and Analog Systems such as the
All Control Inputs Positive–Edge Triggered
Supply Voltage Range = 3.0 Vdc to 18 Vdc
Capable of Driving 2 Low–Power TTL Loads, 1 Low–Power Schottky
Chip Complexity: 488 FETs or 122 Equivalent Gates
Semiconductor Components Industries, LLC, 2000
may occur.
Plastic “P and D/DW” Packages: – 7.0 mW/_C From 65_C To 125_C
V
T
V
P
T
I
DD
stg
in
A
in
D
SS
or V
DC Supply Voltage Range
Input Voltage Range, All Inputs
DC Input Current, per Pin
Power Dissipation,
Operating Temperature Range
Storage Temperature Range
SS
DD
per Package (Note 2.)
v (V
).
in
Parameter
or V
(Voltages Referenced to V
out
) v V
DD
.
in
and V
–0.5 to V
–0.5 to +18.0
SS
–55 to +125
–65 to +150
out
) (Note 1.)
Value
500
should be constrained
10
DD
+ 0.5
1
Unit
mW
mA
V
V
C
C
MC14549BCP
MC14549BDWR2
MC14559BCP
MC14559BDWR2
Device
ORDERING INFORMATION
xx
A
WL, L
YY, Y
WW, W
http://onsemi.com
DW SUFFIX
CASE 751G
CASE 648
P SUFFIX
SOIC–16
PDIP–16
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
SOIC–16
SOIC–16
Package
PDIP–16
PDIP–16
Publication Order Number:
1000/Tape & Reel
1000/Tape & Reel
16
16
1
1
DIAGRAMS
MC145xxBCP
MARKING
AWLYYWW
AWLYYWW
Shipping
MC14549B/D
25/Rail
25/Rail
145xxB

Related parts for MC14549

MC14549 Summary of contents

Page 1

... These parts differ in only one control input. The Master Reset (MR) on the MC14549B is required in the cascaded mode when more than 8 bits are desired. The Feed Forward (FF) of the MC14559B is used for register shortening where End–of–Conversion (EOC) is required after less than eight cycles ...

Page 2

... MC14549B, MC14559B PIN ASSIGNMENT *For MC14549B Pin input. For MC14559B Pin input. TRUTH TABLES MC14549B SC SC MR( ) Clock Action t–1 t– None Reset Start Conversion Start Conversion Continue Conversion ...

Page 3

... To calculate total supply current at loads other than 50 pF (50 pF where (per package pF The formulas given are for the typical characteristics only at 25_C. MC14549B, MC14559B (Voltages Referenced – 55_C Min Max Min Vdc Symbol V 5 ...

Page 4

... PLH PHL L SC Setup Time Clock Pulse Width Pulse Width — Clock Rise and Fall Time Clock Pulse Frequency 6. The formulas given are for the typical characteristics only. MC14549B, MC14559B (6 pF 25_C Symbol V DD ...

Page 5

... MC14549B, MC14559B SWITCHING TIME TEST CIRCUIT AND WAVEFORMS NOTE: Pin TIMING DIAGRAM É É É É É É É É É É É É É É É É É É É É — Don’t care condition É É INH — Indicates Serial Out is inhibited low. ...

Page 6

... End of Convert (EOC) output is used as the controlling function, since with EOC = 0 (and with for MC14549B but either for MC14559B) no stable state exists under continual clocked operation. The MC14559B will automatically recirculate after EOC = 1 during externally strobed operation, provided ...

Page 7

... Continuously Cycling 8–Bit ADC (Figure 3) This ADC is running continuously because the EOC signal is fed back to the SC input, immediately initiating a new cycle on the next clock pulse. MC14549B, MC14559B TYPICAL APPLICATIONS Continuously Cycling 12–Bit ADC (Figure 4) Because each successive approximation register (SAR) has a capability of handling only an eight–bit word, two must be cascaded to make an ADC with more than eight bits. When it is necessary to cascade two SAR’ ...

Page 8

... With these two linear parts it is possible to construct SA–ADCs with an accuracy eight bits, using as the register one MC14549B or one MC14559B. An additional CMOS block will be necessary to generate the clock frequency. Additional information on successive approximation ADC is found in Motorola Application Note AN– ...

Page 9

... MC14549B, MC14559B PACKAGE DIMENSIONS PLASTIC DIP PACKAGE –A– –T– http://onsemi.com PDIP–16 P SUFFIX CASE 648–08 ISSUE ...

Page 10

... MC14549B, MC14559B PACKAGE DIMENSIONS DW SUFFIX PLASTIC SOIC PACKAGE CASE 751G– 16X e 14X C T http://onsemi.com SOIC–16 ISSUE ...

Page 11

... Notes MC14549B, MC14559B http://onsemi.com 11 ...

Page 12

... English Phone: (+1) 303–308–7142 (Mon–Fri 12:00pm to 5:00pm GMT) Email: ONlit@hibbertco.com EUROPEAN TOLL–FREE ACCESS*: 00–800–4422–3781 *Available from Germany, France, Italy, UK MC14549B, MC14559B CENTRAL/SOUTH AMERICA: Spanish Phone: 303–308–7143 (Mon–Fri 8:00am to 5:00pm MST) Email: ONlit–spanish@hibbertco.com ASIA/PACIFIC: LDC for ON Semiconductor – ...

Related keywords