HMU17/883
October 1997
16 x 16-Bit CMOS Parallel Multiplier
Description
The HMU17/883 is a high speed, low power CMOS 16 x 16-bit
parallel multiplier ideal for fast, real time digital signal processing
applications. The 16-bit X and Y operands may be independently
speci鏗乪d as either two鈥檚 complement or unsigned magnitude for-
mat, thereby allowing mixed mode multiplication operations.
Additional inputs are provided to accommodate format adjust-
ment and rounding of the 32-bit product. The Format Adjust con-
trol allows the user the option of selecting a 31-bit product with
the sign bit replicated LSP. The Round control is provided to
accommodate rounding of the most signi鏗乧ant portion of the
result. This is accomplished by adding one to the most signi鏗?
cant bit of the LSP.
Two 16-bit output registers (MSP and LSP) are provided to hold
the most and least signi鏗乧ant portions of the result, respectively.
These registers may be made transparent for asynchronous
operation through the use of the Feedthrough Control (FT). The
two halves of the product may be routed to a single 16-bit three-
state output port via the output multiplexer control, and in addi-
tion, the LSP is connected to the Y-input port through a separate
three-state buffer.
The HMU17/883 utilizes a single clock signal (CLK) along with
three register enables (ENX, ENY, and ENP) to latch the input
operands and the output product registers. The ENX and ENY
inputs enable the X and Y input registers, while ENP enables both
the LSP and MSP output registers. This con鏗乬uration facilitates
the use of the HMU17/883 for micro-programmed systems.
All outputs of the HMU17/883 also offer three-state control for
multiplexing onto multiuse system busses.
Features
鈥?This Circuit is Processed in Accordance to MIL-STD-
883 and is Fully Conformant Under the Provisions of
Paragraph 1.2.1.
鈥?16 x 16-Bit Parallel Multiplier with Full 32-Bit Product
鈥?High-Speed (45ns) Clocked Multiply Time
鈥?Low Power CMOS Operation
- I
CCSB
= 500碌A(chǔ) Maximum
- I
CCOP
= 7.0mA Maximum at 1MHz
鈥?HMU17/883 is Compatible with the AM29517, LMU17,
IDT7217, and the CY7C517
鈥?Supports Two鈥檚 Complement, Unsigned Magnitude
and Mixed Mode Multiplication
鈥?TTL Compatible Inputs/Outputs
- Three-State Output
Ordering Information
PART NUMBER
HMU17GM-45/883
HMU17GM-60/883
TEMP.
RANGE (
o
C)
-55 to 125
-55 to 125
PACKAGE
68 Ld PGA
68 Ld PGA
PKG.
NO.
Functional Block Diagram
X0-15 TCX
RND
TCY Y0-15/P0-15
REGISTER
REGISTER
REGISTER
CLK
ENX
ENY
MULTIPLIER ARRAY
OEL
FA
FT
FORMAT ADJUST
MSP
REGISTER
LSP
REGISTER
ENP
MSPSEL
OEP
P16-31/P0-15
MULTIPLEXER
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
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Copyright
漏
Intersil Corporation 1999
File Number
2805.2
3-36
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