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MC14554BCL

2-Bit by 2-Bit Parallel Binary Multiplier

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

MC14554B

2-Bit by 2-Bit Parallel

Binary Multiplier

The MC14554B 2 x 2–bit parallel binary multiplier is constructed with

complementary MOS (CMOS) enhancement mode devices. The multiplier

can perform the multiplication of two binary numbers and simultaneously add

two other binary numbers to the product. The MC14554B has two

multiplicand inputs (X0 and X1), two multiplier inputs (Y0 and Y1), five

cascading or adding inputs (K0, K1, M0, M1, and M2), and five sum and

carry outputs (S0, S1, S2, C1 [S3], and C0). The basic multiplier can be

expanded into a straightforward m–bit by n–bit parallel multiplier without

additional logic elements.

Application areas include arithmetic processing (multiplying/adding,

obtaining square roots, polynomial evaluation, obtaining reciprocals, and

dividing), Fast Fourier Transform processing, digital filtering, communica-

tions (convolution and correlation), and process and machine controls.

• Diode Protection on All Inputs

• All Outputs Buffered

• Straight–forward m–Bit By n–Bit Expansion

• No Additional Logic Elements Needed for Expansion

• Multiplies and Adds Simultaneously

• Positive Logic Design

• Supply Voltage Range = 3.0 Vdc to 18 Vdc

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ • Capable of Driving Two Low–Power TTL Loads or One Low–Power

Schottky TTL Load Over the Rated Temperature Range

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ MAXIMUM RATINGS* (Voltages Referenced to VSS)

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Symbol

Parameter

Value

Unit

VDD DC Supply Voltage

– 0.5 to + 18.0

V

Vin, Vout Input or Output Voltage (DC or Transient) – 0.5 to VDD + 0.5 V

Iin, Iout Input or Output Current (DC or Transient),

± 10

mA

per Pin

PD Power Dissipation, per Package†

500

mW

Tstg Storage Temperature

– 65 to + 150

_C

TL

Lead Temperature (8–Second Soldering)

260

_C

* Maximum Ratings are those values beyond which damage to the device may occur.

†Temperature Derating:

Plastic “P and D/DW” Packages: – 7.0 mW/_C From 65_C To 125_C

Ceramic “L” Packages: – 12 mW/_C From 100_C To 125_C

PIN ASSIGNMENT

Y1 1

M0 2

16 VDD

15 Y0

M1 3

C0 4

M2 5

14 X0

13 X1

12 K0

C1 (S3) 6

11 S0

S2 7

10 K1

VSS 8

9 S1

REV 3

1/94

©MMOotoTrOolaR, IOncL. A199C5MOS LOGIC DATA

L SUFFIX

CERAMIC

CASE 620

P SUFFIX

PLASTIC

CASE 648

D SUFFIX

SOIC

CASE 751B

ORDERING INFORMATION

MC14XXXBCP

MC14XXXBCL

MC14XXXBD

Plastic

Ceramic

SOIC

TA = – 55° to 125°C for all packages.

This device contains protection circuitry to

guard against damage due to high static

voltages or electric fields. However, pre-

cautions must be taken to avoid applications of

any voltage higher than maximum rated volt-

ages to this high–impedance circuit. For proper

v v 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). Unused outputs must be left open.

EQUATIONS

S = (X x Y) + K + M

Where:

x Means Arithmetic Times.

+ Means Arithmetic Plus.

S = S3 S2 S1 S0, X = X1X0, Y = Y1Y0,

K = K1 K0, M = M1 M0 (Binary Numbers).

Example:

Given: X = 2(1), Y = 3(11)

K = 1(01), M = 2(10)

Then: S = (2 x 3) + 1 + 2 = 9

S = (10 x 11) + 01 + 10 = 1001

NOTE: C0 connected to M2 for this size

multiplier. See general expansion

diagram for other size multipliers.

MC14554B

1

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