m74hc182 STMicroelectronics, m74hc182 Datasheet

m74hc182

Manufacturer Part Number

m74hc182

Description

Function Look Ahead Carry Generator

Manufacturer

STMicroelectronics

Datasheet

1.M74HC182.pdf (12 pages)

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DESCRIPTION

The M54/74HC182 is a high speed CMOS FUNC-

TION LOOK AHEAD CARRY GENERATOR

fabricated in silicon gate C

the same high speed performance of LSTTL com-

bined with true CMOS low power consumption.

These circuit are capable of anticipating a carry

across four binary adders or group of adders. They

are cascadable to perform full look-ahead across n-

bit

propagate-carry functions are provided as shown in

the pin connection table. When used in conjunction

with the HC181 arithmetic logic unit, these gener-

ators

capability for any word length. Each HC182 gener-

ates the look-ahead (anticipated carry) across a

group of four ALU’s and, in addition, other carry look-

ahead circuits may be employed to anticipate carry

across sections of four look-ahead packages up to

n-bits. The method of cascading circuits to perform

multi-level look-ahead is illustrated under typical ap-

plication data.

Carry input and output of the ALUs are in their true

form, and the carry propagate (P) and carry gener-

ate (G) are in negated form ; therefore, the carry

functions (inputs, outputs, generate, and propagate)

of the look-ahead generators are implemented in

the compatible forms for direct connection to the

ALU. Reinterpretation of carry functions as ex-

plained on the HC181 data sheet are also applicable

to and compatible with the look-ahead generator. All

inputs are equipped with protection circuits against

static discharge and transient excess voltage.

March 1993

HIGH SPEED

LOW POWER DISSIPATION

HIGH NOISE IMMUNITY

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

SYMMETRICAL OUTPUT IMPEDANCE

BALANCED PROPAGATION DELAYS

WIDE OPERATING VOLTAGE RANGE

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS182

PLH

IOH = I

NIH

adders.

= 14 ns (TYP.) at V

= 4 A (MAX.) at T

= t

(OPR) = 2 V to 6 V

provide

= V

PHL

NIL

= 28 % V

= 4 mA (MIN.)

Carry,

high-speed

FUNCTION LOOK AHEAD CARRY GENERATOR

(MIN.)

= 25 C

MOS technology. It has

generate-carry,

= 5 V

carry

look-ahead

and

NC =

No Internal

Connecti o n

(Plastic Package)

(Micro Package)

M54HC182F1R

M74HC182B1R

PIN CONNECTIONS (top view)

M1R

B1R

ORDER CODES :

M74HC182

M54HC182

M74HC182M1R

M74HC182C1R

(Ceramic Package)

(Chip Carrier)

C1R

F1R

1/12

Related parts for m74hc182

m74hc182 Summary of contents

Page 1

... March 1993 B1R (Plastic Package) M1R (Micro Package) ORDER CODES : M54HC182F1R M74HC182B1R PIN CONNECTIONS (top view) and look-ahead Internal Connecti o n M54HC182 M74HC182 F1R (Ceramic Package) C1R (Chip Carrier) M74HC182M1R M74HC182C1R 1/12 ...

Page 2

... M54/M74HC182 FUNCTION TABLES FOR G OUTPUT ALL OTHER COMBINATIONS FOR P OUTPUT ALL OTHER COMBINATIONS FOR Cn+x OUTPUT ALL OTHER COMBINATIONS FOR Cn+y OUTPUT ALL OTHER COMBINATIONS FOR Cn+z OUTPUT ...

Page 3

... LOGIC DIAGRAM M54/M74HC182 3/12 ...

Page 4

... M54/M74HC182 INPUT AND OUTPUT EQUIVALENT CIRCUIT IEC LOGIC SYMBOLS ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Source Sink Current Per Output Pin Ground Current ...

Page 5

... 7.8 mA 0.18 0. GND 0 0 GND GND M54/M74HC182 Value Unit -55 to +125 C o - 1000 500 0 to 400 Value -55 to 125 ...

Page 6

... M54/M74HC182 AC ELECTRICAL CHARACTERISTICS (C Test Conditions Symbol Parameter V CC (V) t Output Transition 2.0 TLH t Time THL 4.5 6.0 t Propagation 2.0 PLH t Delay Time PHL 4.5 (Gn Cn+xyz) 6.0 t Propagation 2.0 PLH t Delay Time PHL 4.5 (Gn 6.0 t Propagation 2.0 PLH t Delay Time PHL 4.5 ( 6.0 t Propagation 2.0 PLH t Delay Time PHL 4.5 (Cn - Cn+xyz) 6.0 C Input Capacitance ...

Page 7

... SWITCHING CHARACTERISTICS TEST WAVEFORM TEST CIRCUIT I (Opr.) CC INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST. TYPICAL APPLICATION 64-BIT ALU, FULL-CARRY LOOK-AHEAD IN THREE LEVELS. M54/M74HC182 7/12 ...

Page 8

... M54/M74HC182 Plastic DIP16 (0.25) MECHANICAL DATA DIM. MIN. a1 0. 8/12 mm TYP. MAX. MIN. 0.020 1.65 0.030 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 inch TYP. MAX. 0.065 0.020 0.010 0.787 0.335 0.100 0.700 0.280 0.201 0.130 0.050 P001C ...

Page 9

... Ceramic DIP16/1 MECHANICAL DATA mm DIM. MIN. TYP 3.3 E 0.38 e3 17.78 F 2.29 G 0.4 H 1.17 L 0. 7.8 Q inch MAX. MIN. TYP 0.130 0.015 0.700 2.79 0.090 0.55 0.016 1.52 0.046 0.31 0.009 1.27 0.020 10.3 8.05 0.307 5.08 M54/M74HC182 MAX. 0.787 0.276 0.110 0.022 0.060 0.012 0.050 0.406 0.317 0.200 P053D 9/12 ...

Page 10

... M54/M74HC182 SO16 (Narrow) MECHANICAL DATA DIM. MIN 0 0. 9 3.8 G 4 10/12 mm TYP. MAX. MIN. 1.75 0.2 0.004 1.65 0.46 0.013 0.25 0.007 0.5 45 (typ.) 10 0.385 6.2 0.228 1.27 8.89 4.0 0.149 5.3 0.181 1.27 0.019 0.62 8 (max.) inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010 0.019 0.393 0.244 0.050 0.350 ...

Page 11

... PLCC20 MECHANICAL DATA mm DIM. MIN. TYP. A 9.78 B 8.89 D 4.2 d1 2.54 d2 0.56 E 7.37 e 1.27 e3 5. 1.27 M1 1.14 inch MAX. MIN. TYP. 10.03 0.385 9.04 0.350 4.57 0.165 0.100 0.022 8.38 0.290 0.050 0.200 0.015 0.101 0.050 0.045 M54/M74HC182 MAX. 0.395 0.356 0.180 0.330 0.004 P027A 11/12 ...

Page 12

... M54/M74HC182 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice ...

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