MC14549BDWR2G datasheet(1/8 Pages) ONSEMI

Numer części	MC14549BDWR2G

Szczegółowy opis	Successive Approximation Registers

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July, 2014 − Rev. 8

1

Publication Order Number:

MC14549B/D

MC14549B, MC14559B

Successive Approximation

Registers

The MC14549B and MC14559B successive approximation

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.

Applications for the MC14549B and MC14559B include

analog−to−digital conversion, with serial and parallel outputs.

Features

• Totally Synchronous Operation

• All Outputs Buffered

• Single Supply Operation

• Serial Output

• Retriggerable

• Compatible with a Variety of Digital and Analog Systems such as the

MC1408 8−Bit D/A Converter

• 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

TTL Load or 2 HTL Loads Over the Rated Temperature Range

• Chip Complexity: 488 FETs or 122 Equivalent Gates

• This Device is Pb−Free and is RoHS Compliant

MAXIMUM RATINGS (Voltages Referenced to VSS)

Parameter

Symbol

Value

Unit

DC Supply Voltage Range

VDD

− 0.5 to +18.0

V

Input Voltage Range, All Inputs

Vin

−0.5 to VDD + 0.5

V

DC Input Current per Pin

Iin

±10

mA

Power Dissipation per Package (Note 1)

PD

500

mW

Operating Temperature Range

TA

− 55 to +125

°C

Storage Temperature Range

Tstg

− 65 to +150

°C

Stresses exceeding those listed in the Maximum Ratings table may damage the

device. If any of these limits are exceeded, device functionality should not be

assumed, damage may occur and reliability may be affected.

1. Temperature Derating: “D/DW” Package: –7.0 mW/

_C From 65_C To 125_C

This device contains protection circuitry to guard against damage due to high

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, Vin and Vout should be constrained to

the range VSS ≤ (Vin or Vout) ≤ VDD.

Unused inputs must always be tied to an appropriate logic voltage level

(e.g., either VSS or VDD).

x

= 4 or 5

A

= Assembly Location

WL = Wafer Lot

YY

= Year

WW = Work Week

G

= Pb−Free Package

MARKING DIAGRAM

http://onsemi.com

See detailed ordering and shipping information in the package

dimensions section on page 3 of this data sheet.

ORDERING INFORMATION

PIN ASSIGNMENT

13

14

15

16

9

10

11

12

5

4

3

2

1

8

7

6

Q0

Q1

Q2

Q3

VDD

SC

*

EOC

Q7

Q6

Q5

Q4

VSS

C

D

Sout

*For MC14549B Pin 10 is MR input.

For MC14559B Pin 10 is FF input.

1

SOIC−16 WB

DW SUFFIX

CASE 751G

16

1

MC145x9B

AWLYYWWG

Podobny numer części - MC14549BDWR2G

Producent	Numer części	Arkusz danych	Szczegółowy opis
ON Semiconductor	MC14549BDWR2G	98Kb / 9P	Successive Approximation Registers June, 2006 ??Rev. 6

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