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MC14554B Datasheet, PDF (1/6 Pages) Motorola, Inc – 2-Bit by 2-Bit Parallel Binary Multiplier | |||
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MC14554B
2-Bit by 2-Bit Parallel
Binary Multiplier
The MC14554B 2 x 2âbit 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 mâbit by nâbit 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
⢠Straightâforward mâBit By nâBit Expansion
⢠No Additional Logic Elements Needed for Expansion
⢠Multiplies and Adds Simultaneously
⢠Positive Logic Design
⢠Supply Voltage Range = 3.0 Vdc to 18 Vdc
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃà ⢠Capable of Driving Two LowâPower TTL Loads or One LowâPower
Schottky TTL Load Over the Rated Temperature Range
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ MAXIMUM RATINGS* (Voltages Referenced to VSS)
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Symbol
Parameter
Value
Unit
VDD DC Supply Voltage
â 0.5 to + 18.0
V
Vin, Vout Input or Output Voltage (DC or Transient) â 0.5 to VDD + 0.5 V
Iin, Iout Input or Output Current (DC or Transient),
± 10
mA
per Pin
PD Power Dissipation, per Packageâ
500
mW
Tstg Storage Temperature
â 65 to + 150
_C
TL
Lead Temperature (8âSecond Soldering)
260
_C
* Maximum Ratings are those values beyond which damage to the device may occur.
â Temperature Derating:
Plastic âP and D/DWâ Packages: â 7.0 mW/_C From 65_C To 125_C
Ceramic âLâ Packages: â 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 = â 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 highâimpedance 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
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