Datasheet MC74LCX16244DTR2, MC74LCX16244DT Datasheet (Motorola)

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SEMICONDUCTOR TECHNICAL DATA

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The MC74LCX16244 is a high performance, non–inverting 16–bit
buffer operating from a 2.7 to 3.6V supply . The device is nibble controlled.
Each nibble has separate Output Enable inputs which can be tied
together for full 16–bit operation. High impedance TTL compatible inputs
significantly reduce current loading to input drivers while TTL compatible
outputs offer improved switching noise performance. A VI specification of

5.5V allows MC74LCX16244 inputs to be safely driven from 5V devices.
The MC74LCX16244 is suitable for memory address driving and all TTL
level bus oriented transceiver applications.

4.5ns maximum propagation delays support high performance
applications. Current drive capability is 24mA at the outputs. The Output
Enable (OEn
a HIGH Z condition.

) inputs, when HIGH, disable the outputs by placing them in



LOW–VOLTAGE

CMOS 16–BIT BUFFER

• Designed for 2.7 to 3.6V V

• 4.5ns Maximum t

pd

Operation

CC

• 5V Tolerant — Interface Capability With 5V TTL Logic

• Supports Live Insertion and Withdrawal

• I

Specification Guarantees High Impedance When VCC = 0V

OFF

• LVTTL Compatible

• LVCMOS Compatible

• 24mA Balanced Output Sink and Source Capability

• Near Zero Static Supply Current in All Three Logic States (20µA)

Substantially Reduces System Power Requirements

• Latchup Performance Exceeds 500mA

• ESD Performance: Human Body Model >2000V;

Machine Model >200V

The MC74LCX16244 contains sixteen non–inverting buffers with
3–state 5V–tolerant outputs. The device is nibble controlled with each
nibble functioning identically, but independently. The control pins may be
tied together to obtain full 16–bit operation. The 3–state outputs are
controlled by an Output Enable (OEn
LOW, the outputs are on. When OEn
impedance state.

) input for each nibble. When OEn is
is HIGH, the outputs are in the high

PLASTIC TSSOP PACKAGE

PIN NAMES

Pins

OEn
D0–D15
O0–O15

DT SUFFIX

CASE 1201–01

Function

Output Enable Inputs
Inputs
Outputs

10/96

 Motorola, Inc. 1996

1

REV 1

MC74LCX16244

OE1

V

CC

O9

V

CC

OE4

OE2

481

D0O0

472

D1O1

463

GNDGND

454

D2O2

445

D3O3

436

V

427

CC

D4O4

418

D5O5

409

GNDGND

3910

D6O6

3811

D7O7

3712

D8O8

3613

D9

3514

GNDGND

3415

D10O10

3316

D11O11

3217

V

3118

CC

D12O12

3019

D13O13

2920

GNDGND

2821

D14O14

2722

D15O15

2623

OE3

2524

OE1

OE2

D0:3

D4:7

1

48

LOGIC DIAGRAM

OE3

OE4

O0:3

O4:7

D8:11

D12:15

25

24

O8:11

O12:15

One of Four

OE1 D0:3 O0:3 OE2 D4:7 O4:7 OE3 D8:11 O8:11 OE4 D12:15 O12:15

L L L L L L L L L L L L
L H H L H H L H H L H H

H X Z H X Z H X Z H X Z

H = High V oltage Level; L = Low V oltage Level; Z = High Impedance State; X = High or Low Voltage Level and T ransitions Are Acceptable, for I
reasons, DO NOT FLOAT Inputs

MOTOROLA LCX DATA

2

BR1339 — REV 2

CC

MC74LCX16244

ABSOLUTE MAXIMUM RATINGS*

Symbol Parameter Value Condition Unit

V

CC

V

I

V

O

I

IK

I

OK

I

O

I

CC

I

GND

T

STG

* Absolute maximum continuous ratings are those values beyond which damage to the device may occur . Exposure to these conditions or conditions

beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is not implied.

1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Typ Max Unit

V

CC

V

I

V

O

I

OH

I

OL

I

OH

I

OL

T

A

∆t/∆V Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V ,

DC Supply Voltage –0.5 to +7.0 V
DC Input Voltage –0.5 ≤ VI ≤ +7.0 V
DC Output Voltage –0.5 ≤ VO ≤ +7.0 Output in 3–State V

–0.5 ≤ VO ≤ VCC + 0.5 Note 1. V
DC Input Diode Current –50 VI < GND mA
DC Output Diode Current –50 VO < GND mA

+50 VO > V
DC Output Source/Sink Current ±50 mA
DC Supply Current Per Supply Pin ±100 mA
DC Ground Current Per Ground Pin ±100 mA
Storage Temperature Range –65 to +150 °C

Supply Voltage Operating

Data Retention Only
Input Voltage 0 5.5 V
Output Voltage (HIGH or LOW State)

(3–State)
HIGH Level Output Current, VCC = 3.0V – 3.6V –24 mA
LOW Level Output Current, VCC = 3.0V – 3.6V 24 mA
HIGH Level Output Current, VCC = 2.7V – 3.0V –12 mA
LOW Level Output Current, VCC = 2.7V – 3.0V 12 mA
Operating Free–Air Temperature –40 +85 °C

VCC = 3.0V

2.0

1.5

0
0

0 10 ns/V

3.3

3.3

CC

V

3.6

3.6

CC

5.5

mA

V

V

DC ELECTRICAL CHARACTERISTICS

TA = –40°C to +85°C

Symbol Characteristic Condition Min Max Unit

V

IH

V

IL

V

OH

V

OL

2. These values of VI are used to test DC electrical characteristics only.

LCX DATA
BR1339 — REV 2

HIGH Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 2.0 V
LOW Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 0.8 V
HIGH Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOH = –100µA VCC– 0.2 V

VCC = 2.7V; IOH = –12mA 2.2
VCC = 3.0V; IOH = –18mA 2.4
VCC = 3.0V; IOH = –24mA 2.2

LOW Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOL = 100µA 0.2 V

VCC = 2.7V; IOL= 12mA 0.4
VCC = 3.0V; IOL = 16mA 0.4
VCC = 3.0V; IOL = 24mA 0.55

3 MOTOROLA

MC74LCX16244

DC ELECTRICAL CHARACTERISTICS (continued)

TA = –40°C to +85°C

Symbol Characteristic Condition Min Max Unit

I

I

I

OZ

I

OFF

I

CC

∆I

CC

AC CHARACTERISTICS (tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)

Symbol Parameter Waveform Min Max Max Unit

t

PLH

t

PHL

t

PZH

t

PZL

t

PHZ

t

PLZ

t

OSHL

t

OSLH

3. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH–to–LOW (t
guaranteed by design.

Input Leakage Current 2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V ±5.0 µA
3–State Output Current 2.7 ≤ VCC ≤ 3.6V; 0V ≤ VO ≤ 5.5V;

Power–Off Leakage Current VCC = 0V; VI or VO = 5.5V 10 µA
Quiescent Supply Current

Increase in ICC per Input 2.7 ≤ VCC ≤ 3.6V; VIH = VCC – 0.6V 500 µA

Propagation Delay
Input to Output

Output Enable Time to
High and Low Level

Output Disable Time From
High and Low Level

Output–to–Output Skew
(Note 3.)

2.7 ≤ VCC ≤ 3.6V; VI = GND or V

2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI or VO ≤ 5.5V ± 20 µA

VI = VIH or V

1 1.5

2 1.5

2 1.5

IL

VCC = 3.0V to 3.6V VCC = 2.7V

1.5

1.5

1.5

CC

Limits

TA = –40°C to +85°C

4.5

4.5

5.5

5.5

5.4

5.4

1.0

1.0

) or LOW–to–HIGH (t

OSHL

±5.0 µA

20 µA

5.2

5.2

6.3

6.3

5.7

5.7

); parameter

OSLH

ns

ns

ns

ns

DYNAMIC SWITCHING CHARACTERISTICS

TA = +25°C

Symbol Characteristic Condition Min Typ Max Unit

V

OLP

V

OLV

4. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is
measured in the LOW state.

Dynamic LOW Peak Voltage (Note 4.) VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V 0.8 V
Dynamic LOW Valley Voltage (Note 4.) VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V 0.8 V

CAPACITIVE CHARACTERISTICS

Symbol Parameter Condition Typical Unit

C
C
C

IN
OUT
PD

Input Capacitance VCC = 3.3V, VI = 0V or V
Output Capacitance VCC = 3.3V, VI = 0V or V
Power Dissipation Capacitance 10MHz, VCC = 3.3V, VI = 0V or V

CC
CC

CC

7 pF
8 pF

20 pF

MOTOROLA LCX DATA

4

BR1339 — REV 2

Dn

On

OEn

On

t

PLH

1.5V 1.5V

WAVEFORM 1 – PROPAGATION DELAYS

tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns

t

PZH

1.5V

t

PHZ

1.5V1.5V

1.5V

t

PHL

2.7V

0V

V

OH

V

OL

2.7V

0V

V

CC

VOH – 0.3V

≈

0V

MC74LCX16244

PULSE

GENERATOR

On

t

PZL

1.5V

WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES

tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns

t

PLZ

Figure 1. AC Waveforms

V

CC

DUT

R

T

TEST SWITCH

t

, t

PLH

PHL

t

, t

PZL

PLZ

Open Collector/Drain t
t

, t

PZH

PHZ

CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = Z

of pulse generator (typically 50Ω)

OUT

PLH

and t

PHL

C

L

R

L

Open

6V
6V

GND

R

1

≈

3.0V

VOL + 0.3V
GND

6V
OPEN
GND

LCX DATA
BR1339 — REV 2

Figure 2. T est Circuit

5 MOTOROLA

MC74LCX16244

OUTLINE DIMENSIONS

0.076 (0.003)

–T–

SEATING
PLANE

S

U

M

0.254 (0.010) T

PIN 1
IDENT.

PLASTIC TSSOP PACKAGE

DT SUFFIX

CASE 1201–01

ISSUE A

K

48X REF

0.12 (0.005) V

M

S

U

T

S

J

2548

L

B

–U–

N

124

A

–V–

N

DETAIL E

D

C

DETAIL E

G

H

K

K1

J1

SECTION N–N

F

0.25 (0.010)

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS OR GATE
BURRS. MOLD FLASH OR GATE BURRS
SHALL NOT EXCEED 0.15 (0.006) PER SIDE.

4. DIMENSION K DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN
EXCESS OF THE K DIMENSION AT MAXIMUM
MATERIAL CONDITION.

5. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.

6. DIMENSIONS A AND B ARE TO BE
DETERMINED AT DATUM PLANE –W–.

DIM MIN MAX MIN MAX

A 12.40 12.60 0.488 0.496
B 6.00 6.20 0.236 0.244

M

–W–

C ––– 1.10 ––– 0.043
D 0.05 0.15 0.002 0.006
F 0.50 0.75 0.020 0.030
G 0.50 BSC 0.0197 BSC
H 0.37 ––– 0.015 –––
J 0.09 0.20 0.004 0.008

J1 0.09 0.16 0.004 0.006

K 0.17 0.27 0.007 0.011

K1 0.17 0.23 0.007 0.009

L 7.95 8.25 0.313 0.325
M 0 8 0 8

____

INCHESMILLIMETERS

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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
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applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
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arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
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Opportunity/Affirmative Action Employer.

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MOTOROLA LCX DATA

6

◊

MC74LCX16244/D

BR1339 — REV 2