SGS Thomson Microelectronics 74AC16244TTR Datasheet

WITH 3-STATE OUTPUTS (NON INVERTED)

■ HIGH SPEED:

t

= 4.5 ns (TYP.) at VCC=5V

PD

■ LOW POWER DISSIPATION:

I

=8µA (MAX.) at TA=25°C

CC

■ HIGH NOISE IMMUNITY:

V

NIH=VNIL

■ POWER DOWN PROTECTION ON INPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

|=IOL=24mA(MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

■ OPERATING VOLTAGE RANGE:

V

(OPR) = 2V to 6V

CC

■ PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 16244

■ IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74AC16244 is an advanced high-speed
CMOS 16-BIT BUS BUFFER (3-STATE) fabricat­ed with sub-micron silicon gate and double-layer
metal wiring C
Any nG
BUFFERS. Output Enable inputs (nG
together give full 16 bit operation.
When nG
nG

is HIGH, the output are in high impedance
state.
The device is designed to be used with 3-state
memory address drivers, etc.

= 28% VCC(MIN.)

PHL

2

MOS tecnology.

output con trol governs four BUS

)tied

is LO W, the outputs are enabled. When

74AC16244

16-BIT BUS BUFFER

TSSOP

ORDER CODES

PACKAGE TUBE T & R

TSSOP 74AC16244TTR

PIN CO NNECTION

1/9February 2003

74AC16244

INPUT AND OUTP UT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

11G

2, 3, 5, 6 1Y1 to 1Y4 Data Outputs

8, 9, 11, 12 2Y1 to 2Y4 Data Outputs
13, 14, 16, 17 3Y1 to 3Y4 Data Outputs
19, 20, 22, 23 4Y1 to 4Y4 Data Outputs

24 4G

25 3G
30, 29, 27, 26 4A1 to 4A4 Data Outputs
36, 35, 33, 32 3A1 to 3A4 Data Outputs
41, 40, 38, 37 2A1 to 2A4 Data Outputs
47, 46, 44, 43 1A1 to 1A4 Data Outputs

48 2G
4, 10, 15, 21,

28, 34, 39, 45

7, 18, 31, 42

GND Ground (0V)

V

CC

Output Enable Input

Output Enable Input
Output Enable Input

Output Enable Input

Positive Supply Voltage

TRUTH TABLE

INPUTS OUTPUT

G

LLL
LHH

HXZ

X : Don’t Care
Z : High Impedance

An Yn

IEC LOGIC SYMBOLS

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74AC16244

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V

V

I

I

OK

I

or I

I

CC

T

T

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V

V

T

dt/dv Input Rise and Fall Time (note 1) V

1) VINfrom30% to 70%of V

Supply Voltage

CC

DC Input Voltage

I

DC Output Voltage -0.5 to VCC+ 0.5

O

DC Input Diode Current

IK

DC Output Diode Current
DC Output Current

O

DC VCCor Ground Current

GND

Storage Temperature

stg

Lead Temperature (10 sec)

L

Supply Voltage

CC

Input Voltage 0 to V

I

Output Voltage 0 to V

O

Operating Temperature

op

= 3.0, 4.5 or 5.5

CC

CC

-0.5 to +7.0 V

-0.5 to +7.0 V

± 20 mA
± 50 mA
± 50 mA

± 400 mA

-65 to +150 °C
300 °C

2to6 V

CC
CC

-55 to 125 °C
0 to 8 ns/V

V

V
V

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