11.3

5

IDT7216L, IDT7217L

16 x 16 PARALLEL CMOS MULTIPLIERS

MILITARY AND COMMERCIAL TEMPERATURE RANGES

PIN DESCRIPTIONS

ABSOLUTE MAXIMUM RATINGS

(1)

NOTE:

2580 tbl 01

1. Stresses greater than those listed under ABSOLUTE MAXIMUM

RATINGS may cause permanent damage to the device. This is a stress

rating only and functional operation of the device at these or any other

conditions above those indicated in the operational sections of this

specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect reliability.

°C, f = 1.0 MHz)

Symbol

Conditions

Max.

Unit

Input Capacitance

10

pF

Output Capacitance

12

pF

NOTE:

2580 tbl 04

1. This parameter is measured at characterization and not tested.

Symbol

Rating

Commercial

Military

Unit

Power Supply

Voltage

–0.5 to +7.0

–0.5 to +7.0

V

Terminal Voltage

with Respect to

GND

V

Operating

Temperature

0 to +70

–55 to +125

°C

Temperature

Under Bias

–55 to +125

–65 to +135

°C

Storage

Temperature

–55 to +125

–65 to +150

°C

DC Output

Current

50

50

mA

Pin Name

I/O

Description

I

Data Inputs

I/O

OEL = 0

O

Data Output (LSP or MSP)

OEL

I

tristated.

OEP

I

I

Mode control for each data word. Low designates unsigned data input and high designates two's

complement.

RND

I

"Round" control for rounding of MSP. When high, 1 is added to the most significant bit of LSP. This

rising edge of the logical OR of CLKX and CLKY in the 7216 and on the rising edge of CLK in the 7217.

Rounding always occurs in the positive direction which may introduce a systematic bias.

MSPSEL

I

FA

I

Format adjust control. When high, a full 32 bit product is selected. When low, a left shifted 31 bit product

is selected with the sign bit replicated in the LSP. FA is normally high, except for certain fractional two's

complement applications (see multiplier input / output formats).

FT

I

Flow through control. When high, both MSP and LSP registers are by-passed.

CLK

I

7217 X, Y, RND, LSP and MSP register clock input.

CLKX

I

7216 X register clock input. Also clocks RND register.

CLKY

I

7216 Y register clock input. Also clocks RND register.

CLKL

I

7216 LSP register clock input.

CLKM

I

7216 MSP register clock input.

ENX

I

7217 X register clock enable. Also enables RND register clock.

ENY

I

7217 Y register clock enable. Also enables RND register clock.