Datasheet 74AC299 Datasheet (SGS Thomson Microelectronics)



WITH ASYNCHRONOUS CLEAR

■ HIGHSPEED:

=170MHz(TYP.)at VCC=5V

f

MAX

■ LOWPOWER DISSIPATION:

I

=8µA (MAX.) at TA=25oC

CC

■ HIGHNOISEIMMUNITY:

V

NIH=VNIL

■

50ΩTRANSMISSIONLINEDRIVING
CAPABILITY

■ SYMMETRICALOUTPUT IMPEDANCE:

|I

|=IOL=24mA(MIN)

OH

■ BALANCEDPROPAGATIONDELAYS:

≅

t

PLH

■ OPERATINGVOLTAGERANGE:

V

(OPR)= 2Vto6V

CC

■ PINANDFUNCTIONCOMPATIBLEWITH

74SERIES299

■

IMPROVEDLATCH-UP IMMUNITY

DESCRIPTION

The AC299 is an high-speed CMOS 8-BIT PIPO
SHIFT REGISTERS (3-STATE) fabricated with
sub-micron silicon gate and double-layer metal
wiring C
power applications mantaining high speed
operation similar to equivalent Bipolar Schottky

=28%VCC(MIN.)

t

PHL

2

MOS technology. It is ideal for low

74AC299

8 BIT PIPO SHIFT REGISTER

PRELIMINARY DATA

B

(PlasticPackage)

(Micro Package)

ORDERCODES :

74AC299B 74AC299M

TTL.
These devices have four modes (HOLD, SHIFT
LEFT, SHIFT RIGHT and LOAD DATA). Each
mode is chosenby two functionselect inputs (S0,
S1)as shownin the TruthTable.

When one or both enable inputs, (G1, G2) are
high, the eight input/output terminals are in
the high-impedance state; however sequential
operation or clearing of the register is not
affected.Clear function is asynchronousto clock.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.

M

PIN CONNECTIONAND IEC LOGIC SYMBOLS

April 1999

1/13

74AC299

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No SYM BO L NAME AND FUNCT I O N

1, 19 S0, S1 Mode Select Inputs

2, 3 G1, G2 3 State Output Enable Inputs (Active LOW)

7, 13, 6,14, 5, 15, 4, 16 A/QA to H/QH Parallel Data Inputs or 3 State Parallel Outputs (Bus Driver)

8, 17 QA’ to QH’ Serial Outputs (Standard Output)

9 CLEAR Asynchronous Master Reset Input (Active LOW)
11 SR Serial Data Shift Right Input
12 CLOCK Clock Input (LOW to HIGH, Edge-triggered)
18 SL Serial Data Shift Left Input
10 GND Ground (0V)
20 V

CC

Positive Supply Voltage

TRUTH TABLE

MODE INPUTS INPUT S/ OUTPU TS OUT PUT S

CLEAR

FUNCTION
SELECTED

S1 S0 G1* G2* SL SR

Z L HHXX X XXZZL L

CLEAR L L X L L X X X LLLL

LXLLLXXXLLLL
HOLD H LLLLXXXQA0QH0QA0QH0
SHIFT

RIGHT

SHIFT

LEFT

H L H L L X H H QGn H QGn
H L H L L X L L QGn L QGn
H H L L L H X QBn H QBn H
H H L L L L X QBn L QBn L

LOAD H H H X X X X ahah

* Whenone or bothoutputcontrols arehigh, theeight, input/output terminals are thehigh impedanc e state:howewer sequential operationor clearing of
theregister isnotaffected.
Z :HIGHIMPEDANCE
Qn0 : THELEVELOF AnBEFORETHEINDICATEDSTEADYSTATEINPUTCONDITIONS WEREESTABLISED.
Qnn :THELEVELOF QnBEFORETHE MOSTRECENTACTIVETRANSITIONINDICATEDBYOR
a,h :THELEVELOFTHESTEADYSTATEINPUTSA,H,RESPECTIVELY.
X :DON’TCARE

2/13

OUTPUT

CONTROL

CLOCK SERIAL A/QA H/QH QA’ QH’

LOGICDIAGRAM

74AC299

3/13

74AC299

TIMINGCHART

4/13

74AC299

ABSOLUTE MAXIMUM RATINGS

Symb o l Para met er Val u e Uni t

V

V

V

I

I

OK

I

or I

I

CC

T

T

AbsoluteMaximum Ratingsarethosevalues beyond whichdamagetothedevicemayoccur. Functionaloperationunderthese condition isnotimplied.

RECOMMENDEDOPERATINGCONDITIONS

Symb o l Para met er Value Un it

V

V

V

T

dt/dv Input Rise and Fall Time V

1)VINfrom30%to70%of V

Supply Voltage -0.5 to +7 V

CC

DC Input Voltage -0.5 to VCC+ 0.5 V

I

DC Output Voltage -0.5 to VCC+ 0.5 V

O

DC Input Diode Current ± 20 mA

IK

DC Output Diode Current ± 20 mA

DC Output Current

O

DC VCCor Ground Current

GND

Storage Temperature -65 to +150

stg

Lead Temperature (10 sec) 300

L

Supply Voltage 2 to 6 V

CC

Input Voltage 0 to V

I

Output Voltage 0 to V

O

Operating Temperature: -40 to +85

op

= 3.0, 4.5 or 5.5 V(note 1) 8 ns/V

CC

CC

50 mA

±

400 mA

±

CC
CC

o

C

o

C

V
V

o

C

5/13

74AC299

DC SPECIFICATIONS

Symbol Parameter Test Conditi ons Value Unit

T

V

CC

(V)

High Level Input Voltage 3.0 VO= 0.1V or

V

IH

4.5 3.15 2.25 3.15

-0.1 V

V

CC

5.5 3.85 2.75 3.85

Low Level Input Voltage 3.0 VO= 0.1V or

V

IL

4.5 2.25 1.35 1.35

V

-0.1 V

CC

5.5 2.75 1.65 1.65

High Level Output

V

OH

Voltage

Low Level Output

V

OL

Voltage

Input Leakage Current 5.5 VI=VCCor GND ±0.1 ±1 µA

I

I

3 State Output Leakage

I

OZ

Current
Quiescent Supply

I

CC

3.0

4.5 I

5.5 I

V
V

3.0 I

4.5 I

5.5 I

3.0

4.5 I

5.5 I

V
V

3.0 I

4.5 I

5.5 I

5.5 VI=VIHor V

IO=-50 µA 2.9 2.99 2.9

(*)

I
IH

V

IL

=-50 µA 4.4 4.49 4.4

O

=

=-50 µA 5.4 5.49 5.4

or

O

=-12 mA 2.56 2.46

O

=-24 mA 3.86 3.76

O

=-24 mA 4.86 4.76

O

IO=50 µA 0.002 0.1 0.1

(*)

I
IH

V

IL

=50 µA 0.001 0.1 0.1

O

=

=50µA 0.001 0.1 0.1

or

O

=12 mA 0.36 0.44

O

=24 mA 0.36 0.44

O

=24 mA 0.36 0.44

O

IL

VO=VCCor GND

5.5 VI=VCCor GND 8 80 µA

Current
Dynamic Output Current

I

OLD

OHD

(note 1, 2)

I

1) Maximum test duration 2ms, oneoutput loaded attime

2)Incident waveswitchingisguaranteed ontransmission lineswithimpedances aslowas50 Ω.
(*)Alloutputs loaded.

5.5 V

= 1.65 V max 75 mA

OLD

V

= 3.85 V min -75 mA

OHD

=25oC -40 to 85oC

A

Min. Typ. Max. Min. Max.

2.1 1.5 2.1

1.5 0.9 0.9

0.5

±

5

±

µ

V

V

V

V

A

6/13

74AC299

AC ELECTRICALCHARACTERISTICS

= 50 pF, RL= 500 Ω, Input tr=tf=3 ns)

(C

L

Symbol Parameter Test Conditio n Value Unit

t

Propagation Delay Time

PLH

t

CK to Q’

PHL

Propagation Delay Time

t

PLH

t

CK to Q

PHL

Propagation Delay Time

t

PLH

t

CLEAR to Q’

PHL

Propagation Delay Time

t

PLH

t

CLEAR to Q

PHL

Output Enable Time 3.3

t

PZL

t

PZH

Output Disable Time 3.3

t

PLZ

t

PHZ

t

CLEAR pulse Width,

w

,Q’

A

A-QH

LOW
CK pulse Width, LOW 3.3

t

w

t

Setup Time HIGH or

s

LOW (S0 or S1 to CK)
Hold Time HIGH or LOW

t

h

(S0 or S1 to CK)
Setup Time HIGH or

t

s

LOW (SR or SL to CK)
Hold Time HIGH or LOW

t

h

(SR or SL to CK)

t

f

Recovery Time CLR to Q 3.3

REM

Maximum Clock

MAX

Frequency

(*) Voltagerangeis3.3V±0.3V
(**) Voltagerangeis 5V± 0.5V

H

,Q’

A

A-QH

H

V

(V)

3.3

5.0

3.3

5.0

3.3

5.0

3.3

5.0

5.0

5.0

3.3

5.0

5.0

3.3

5.0

3.3

5.0

3.3

5.0

3.3

5.0

5.0

3.3

5.0

CC

(*)
(*)
(*)
(*)
(*)
(*)
(*)
(*)
(*)

(**)

(*)

(**)

(*)

(**)

(*)

(**)

(*)

(**)

(*)

(**)

(*)

(**)

(*)

(**)

(*)

(**)

(*)

(**)

T

=25oC -40 to 85oC

A

Min. Typ. Max. Min. Max.

10.6 18.4 1.0 21.0

6.8 10.5 1.0 12.0

10.9 19.3 1.0 22.0

7.3 10.5 1.0 12.0

8.1 14.0 1.0 16.0

6.1 9.2 1.0 10.5

9.8 16.7 1.0 19.0

6.7 10.9 1.0 12.4

9.9 17.5 1.0 20.0

6.6 9.6 1.0 11.0

8.1 14.0 1.0 16.0

6.4 9.6 1.0 11.0

7.0 7.0

5.0 5.0

8.0 8.0

5.0 5.0

11.9 13.6

7.0 7.0

0.0 0.0

0.0 0.0

6.0 6.0

4.0 4.0

1.0 1.0

1.0 1.0

5.0 5.0

3.0 3.0
45 90 45
80 140 80

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

MHz

CAPACITIVE CHARACTERISTICS

Symbol Parameter Test Conditi ons Value Unit

T

V

CC

(V)

Input Capacitance

C

IN

Bus Input Capacitance 5.0 13

C

I/O

Power Dissipation

C

PD

5.0

5.0 fIN= 10 MHz 137 pF

Capacitance (note 1)

1)CPDisdefinedasthevalueoftheIC’sinternalequivalent capacitance whichiscalculatedfromtheoperatingcurrent consumption without load.(Referto

=25oC -40 to 85oC

A

Min. Typ. Max. Min. Max.

510 10

pF

7/13

74AC299

TESTCIRCUIT

TEST SW IT CH

t

PLH,tPHL

t

PZL,tPLZ

t

PZH,tPHZ

CL= 50 pF orequivalent (includes jigand probe capacitance)

=500Ωorequivalent

R

L=R1

R

ofpulsegenerator(typically50Ω)

T=ZOUT

Open

2V

CC

Open

WAVEFORM 1: PROPAGATIONDELAYS

(f=1MHz;50% duty cycle)

8/13

74AC299

WAVEFORM 2: PROPAGATIONDELAYS

(f=1MHz;50% duty cycle)

WAVEFORM 3: PROPAGATIONDELAYS (f=1MHz; 50% duty cycle)

9/13

74AC299

WAVEFORM 4: PROPAGATIONDELAYS

(f=1MHz;50% duty cycle)

10/13

Plastic DIP-20 (0.25) MECHANICAL DATA

74AC299

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

a1 0.254 0.010

B 1.39 1.65 0.055 0.065
b 0.45 0.018

b1 0.25 0.010

D 25.4 1.000
E 8.5 0.335

e 2.54 0.100

e3 22.86 0.900

F 7.1 0.280

I 3.93 0.155

L 3.3 0.130

Z 1.34 0.053

mm inch

P001J

11/13

74AC299

SO-20 MECHANICALDATA

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 2.65 0.104
a1 0.10 0.20 0.004 0.007
a2 2.45 0.096

b 0.35 0.49 0.013 0.019
b1 0.23 0.32 0.009 0.012

C 0.50 0.020

c1 45 (typ.)

D 12.60 13.00 0.496 0.512

E 10.00 10.65 0.393 0.419

e 1.27 0.050
e3 11.43 0.450

F 7.40 7.60 0.291 0.299

L 0.50 1.27 0.19 0.050

M 0.75 0.029

S 8 (max.)

mm inch

12/13

P013L

74AC299

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subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

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