FN2803 Rev 4.00

Page 1 of 13

November 1999

FN2803

Rev 4.00

November 1999

HMU16, HMU17

16 x 16-Bit CMOS Parallel Multipliers

DATASHEET

The HMU16 and HMU17 are high speed, low power CMOS

16-bit x 16-bit multipliers ideal for fast, real time digital signal

processing applications.

The X and Y operands along with their mode controls (TCX

and TCY) have 17-bit input registers. The mode controls

independently specify the operands as either two’s

complement or unsigned magnitude format, thereby allowing

mixed mode multiplication operations.

Two 16-bit output registers are provided to hold the most and

least significant halves of the result (MSP and LSP). For

asynchronous output, these registers may be made

transparent through the use of the Feedthrough Control

(FT).

Additional inputs are provided for format adjustment and

rounding. The Format Adjust control (FA) allows the user to

select either a left shifted 31-bit product or a full 32-bit

product, whereas the round control (RND) provides the

capability of rounding the most significant portion of the

result.

The HMU16 has independent clocks (CLKX, CLKY, CLKL,

CLKM) associated with each of these registers to maximize

throughput and simplify bus interfacing. The HMU17 has

only a single clock input (CLK), but makes use of three

register enables (ENX, ENY and ENP). The ENX and ENY

inputs control the X and Y Input Registers, while ENP

controls both the MSP and LSP Output Registers. This

configuration facilitates the use of the HMU17 for

microprogrammed systems.

The two halves of the product may be routed to a single

16-bit three-state output port via a multiplexer, and in

addition, the LSP is connected to the Y-input port through a

separate three-state buffer.

Features

• 16 x 16-Bit Parallel Multiplier with Full 32-Bit Product

• High-Speed (35ns) Clocked Multiply Time

• Low Power Operation

-ICCSB = 500A Maximum

-ICCOP = 7.0mA Maximum at 1MHz

• Supports Two’s Complement, Unsigned Magnitude and

Mixed Mode Multiplication

• HMU16 is Compatible with the AM29516, LMU16,

IDT7216 and the CY7C516

• HMU17 is Compatible with the AM29517, LMU17,

IDT7217 and the CY7C517

• TTL Compatible Inputs/Outputs

• Three-State Outputs

Applications

• Fast Fourier Transform Analysis

• Digital Filtering

• Graphic Display Systems

• Image Processing

• Radar and Sonar

• Speech Synthesis and Recognition

Ordering Information

PART NUMBER

TEMP.

RANGE (oC)

PACKAGE

PKG.

NO.

HMU16JC-35

0 to 70

68 Ld PLCC

N68.95

HMU16JC-45

0 to 70

68 Ld PLCC

N68.95

HMU16GC-35

0 to 70

68 Ld CPGA

G68.B

HMU16GC-45

0 to 70

68 Ld CPGA

G68.B

HMU17JC-35

0 to 70

68 Ld PLCC

N68.95

HMU17JC-45

0 to 70

68 Ld PLCC

N68.95

HMU17GC-35

0 to 70

68 Ld CPGA

G68.B

HMU17GC-45

0 to 70

68 Ld CPGA

G68.B