CD4514BCNX - Fairchild Semiconductor

October 1987

Revised April 2002

CD4514BC• CD4515BC 4-Bit Latched/4- to-16 Line Decoders

CD4514BC• CD4515BC

4-Bit Latched/4-to-16 Line Decoders

General Description

The CD45 14BC and C D4515BC a re 4-to-16 line decode rs

with latched inputs impleme nted with complemen tary MOS

(CMOS) circuits constructed with N- and P-channel

enhancement mode transistors. These circuits are prima-

rily used in decoding applications where low power dissipa-

tion and/or high noise immunity is required.

The CD45 14B C ( outp ut a cti ve h igh op ti on ) pr ese nts a lo gi -

cal “1” at the selected output, whereas the CD4515BC pre-

sents a l og ical “ 0” at the sele cted o utpu t. The in put l atch es

are R–S type flip-flops, wh ich hold the last input data pre-

sented prior to the strobe transition from “1” to “0”. This

input dat a is deco ded and t he co rre spo ndin g ou tpu t is acti -

vated. An output inhibit line is also available.

Features

■Wide supply voltage rang e: 3.0V to 15V

■High noise immunity: 0.45 VDD (typ.)

■Low power TTL: fan out of 2

compatibility: driving 74L

■Low quiescent power dis sipation:

0.025 µW/package @ 5.0 VDC

■Single supply operation

■Input impedance = 1012Ω typically

■Plug-in replacement for MC14514, MC14515

Ordering Code:

Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering co de.

Connection Diagram

Top View

Order Number Package Number Package Diagram

CD4514BCWM M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

CD4514BCN N24A 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-010, 0.600" Wide

CD4515BCWM M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

CD4515BCN N24A 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-010, 0.600" Wide

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CD4514BC• CD4515BC

Truth Table

Decode Truth Table (Strobe = 1)

X = Don’t Care

Logic Diagram

Data Inputs Selected Output

Inhibit D C B A CD4514 = Logic “1”

CD4515 = Logic “0”

0 0 0 0 0 S0

0 0 0 0 1 S1

0 0 0 1 0 S2

0 0 0 1 1 S3

0 0 1 0 0 S4

0 0 1 0 1 S5

0 0 1 1 0 S6

0 0 1 1 1 S7

0 1 0 0 0 S8

0 1 0 0 1 S9

0 1 0 1 0 S10

0 1 0 1 1 S11

0 1 1 0 0 S12

0 1 1 0 1 S13

0 1 1 1 0 S14

0 1 1 1 1 S15

1 X X X X All Outputs = 0, CD4514

All Outputs = 1, CD4515

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CD4514BC• CD4515BC

Absolute Maximum Ratings(Note 1)

(Note 2) Recommended Operating

Conditions (Note 2)

Note 1: “Absolute Maximum Ratings” are those va lues beyond which the

safety of the device cannot be guaranteed. Except for “Operat ing Tempera-

ture Range” they are not mea nt to imply that the devices should be oper-

ated at these limits. The tables of “Recommended Operating Conditions”

and “Electrical Characteristics” provide conditions for actual device opera-

tion.

Note 2: VSS = 0V unles s ot herwise s pecified .

DC Electrical Characteristics (Note 2)

CD4514BC, CD4515BC

Note 3: IOH and IOL are tes t ed one ou tp ut at a ti m e.

DC Supply V oltage (VDD) −0.5V to +18V

Input Voltage (VIN) −0.5V to VDD + 0.5V

Storage Temperature Range (TS) −65°C to +150°C

Power Dissipat i on (PD)

Dual-In-Line 700 mW

Small Outline 500 mW

Lead Temperature (TL)

(Soldering, 10 seconds) 260°C

DC Supply Voltage (VDD) 3V to 15V

Input Voltage (VIN) 0V to VDD

Operating Temperature Range (TA)

CD4514BC, CD4515BC

−55°C to +125°C

Symbol Parameter Conditions −55°C +25°C+125°CUnits

Min Max Min Typ Max Min Max

IDD Quiescent Device VDD = 5V, VIN = VDD or V SS 5 0.005 5 150 µA Current VDD = 10V, VIN = VDD or V SS 10 0.010 10 300

VDD = 15V, VIN = VDD or V SS 20 0.015 20 600

VOL LOW Level VIL = 0V, VIH = VDD,

Output Voltage |IO| < 1 µA

VDD = 5V 0.05 0 0.05 0.05 V VDD = 10V 0.05 0 0.05 0.05

VDD = 15V 0.05 0 0.05 0.05

VOH HIGH Level VIL = 0V, VIH = VDD,

Output Voltage |IO| < 1 µA

VDD = 5V 4.95 4.95 5.0 4.95 V VDD = 10V 9.95 9.95 10.0 9.95

VDD = 15V 14.95 14.95 15.0 14.95

VIL LOW Level |IO| < 1 µA

Input Voltage VDD = 5V, VO = 0.5V or 4.5V 1.5 2.25 1.5 1.5 V VDD = 10V, VO = 1.0V or 9.0V 3.0 4.50 3.0 3.0

VDD = 15V, VO = 1.5V or 13.5V 4.0 6.75 4.0 4.0

VIH HIGH Level |IO| < 1 µA

Input Voltage VDD = 5V, VO = 0.5V or 4.5V 3.5 3.5 2.75 3.5 V VDD = 10V, VO = 1.0V or 9.0V 7.0 7.0 5.50 7.0

VDD = 15V, VO = 1.5V or 13.5V 11.0 11.0 8.25 11.0

IOL LOW Level Output VDD = 5V, VO = 0.4V 0.64 0.51 0.88 0.36 mA Current (Note 3) VDD = 10V, VO = 0.5V 1.6 1.3 2.25 0.90

VDD = 15V, VO = 1.5V 4.2 3.4 8.8 2.4

IOH HIGH Level Output VDD = 5V, VO = 4.6V −0.64 −0.51 −0.88 −0.36 mA Current (Note 3) VDD = 10V, VO = 9.5V −1.6 −1.3 −2.25 −0.90

VDD = 15V, VO = 13.5V −4.2 −3.4 −8.8 −2.4

IIN Input Current VDD = 15V, VIN = 0V −0.1 −10−5 −0.1 −1.0 µA

VDD = 15V, VIN = 15V 0.1 10−5 0.1 1.0

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CD4514BC• CD4515BC

AC Electrical Characteristics (Note 4)

All types CL = 50 pF, TA = 25 °C, tr = tf = 20 ns unless otherwise specified

Note 4: AC Parameters are guara nt eed by DC c orrelat ed testing.

Note 5: CPD determines the no load AC power consumption of any CMOS device. For complete explanation, see Family Characteristics application note,

AN-90.

Note 6: Capacita nce is guaranteed by periodic tes ti ng.

Symbol Parameter Conditions Min Typ Max Units

tTHL, tTLH Transition Times VDD = 5V 100 200 ns VDD = 10V 50 100

VDD = 15V 40 80

tPLH, tPHL Propagation Delay Times VDD = 5V 550 1 1 00 ns VDD = 10V 225 450

VDD = 15V 150 300

tPLH, tPHL Inhibit Propagation VDD = 5V 400 800 ns Delay Times VDD = 10V 150 300

VDD = 15V 100 200

tSU Setup Time VDD = 5V 125 250 ns VDD = 10V 50 100

VDD = 15V 38 75

tWH Strobe Pulse Width VDD = 5V 175 350 ns VDD = 10V 50 100

VDD = 15V 38 75

CPD Power Dissipation Capacitance Per Package (Note 5) 150 pF

CIN Input Capacitance Any Input (Note 6) 5 7.5 pF

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CD4514BC• CD4515BC

AC Test Circuit and Switching Time Waveforms

FIGURE 1.

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CD4514BC• CD4515BC

Applications

Two CD4512 8-channel data selectors are used here with

the CD4514B 4-bit latch/d ecoder to effect a complex data

routing system. A total o f 16 in puts fr om data r egis ters are

select ed and transf erred via a 3- STATE da ta bus t o a da ta

dist r ibu t or fo r r e ar ra n ge me nt an d en t ry i n t o 16 o ut p ut r egi s -

ters. In this way sequ ential data can be re-routed o r inter-

mixed according to p atte rn s dete rm ined by da ta select and

distribution inputs.

Data is place d into the routing schem e via the 8 inputs on

both CD4512 data selectors. One register is assigned to

each input. The signals on A0, A1 and A2 choose 1-of-8

inputs for transfer out to the 3-STATE data bus. A fourth

signa l, label led Dis , disabl es one of the CD4 512 sel ector s,

assuring transfer of data from only one register.

In addition to a choice of input registers, 1–16, the rate of

transfer of the sequential information can also be varied.

That is, if the CD4512 were addressed at a rate that is 8

times faster than the shift fre quency of the input re gisters,

the most significant bi t (MSB) fr om each reg ister could be

selected for transfer to the data bus. Therefore, all of the

most significant bits from all of the registers can be trans-

ferred to the data bus be for e the next mo st sign ifican t bit is

presented for transfer by the input registers.

Information from the 3-STATE bus is redistributed by the

CD4514B 4-bit latch/decoder. Using the 4-bit address,

INA–IND, the information on the inhibit line can be trans-

ferred to the addressed output line to the desired output

registers, A–P. This distribution of data bits to the output

registers can be made in many complex patterns. For

example, all of the most significant bits from the input regis-

ters can be routed into output register A, all of the next

most significant bits into register B, etc. In this way horizon-

tal, vert ical, or oth er method s of data sli cing can be i mple-

mented.

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CD4514BC• CD4515BC

Physical Dimensions inches (millimeters) unless otherwise noted

24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

Package Number M24B

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CD4514BC• CD4515BC 4-Bit Latched/4- to- 16 Line Decoders

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-010, 0.600" Wide

Package Number N24A

Fairchild does not assu me any responsibility for use of any circuitry de scribed, no circuit patent licenses are implied and

Fairchild reserves the right at any time without notice to change said circuitry and specifications.

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FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD

SEMICONDUCTOR CORPORATION. As used herein:

1. Life suppor t de vices o r syste ms are devices or syste ms

which, (a) are intended for surgical implant into the

body, or (b) support or sustain life, and (c) whose failure

to perform when properly used in accordance with

instructions for use provided in the labeling, can be rea-

sonably expected to result in a significant injury to the

user.

2. A critical compon ent i n any compon ent of a lif e supp ort

device or system whose failure to perform can be rea-

sonabl y ex pect ed to ca use the fa ilu re of the li fe su pp ort

device or system, or to affect its safety or effectiveness.