SGS Thomson Microelectronics 74VHCT16240ATTR Datasheet

74VHCT16240A

16-BIT BUS BUFFER

WITH 3-STATE OUTPUTS (INVERTED)

■ HIGH SPEED:t

■ LOW POWER DISSIPATION:

I

=4µA (MAX.) at TA=25°C

CC

■ COMPATIBLE W ITH TTL OUTPUTS:

V

=2V(MIN.), VIL= 0.8V (MAX)

IH

■ POWER DOWN PROTECTION ON INPUTS

= 5.6 ns (TYP.) at VCC=5V

PD

&OUTPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

|=IOL=8mA(MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

PHL

■ OPERATING VOLTAGE RANGE:

V

(OPR) = 4.5V to 5.5V

CC

■ IMPROVED LATCH-UP IMMUNITY

■ LOW NOISE: V

= 0.9V (MAX.)

OLP

DESCRIPTION

The 74VHCT16240A 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

output con trol governs four BUS

BUFFERS. Output Enable inputs (nG

2

MOS technology.

)tied
together give full 16 bit operation.
When nG

is LOW, the outputs are on. When nG is
HIGH, the output are in high impedance state.
This device is designed t o be used with 3 state
memory address drivers, etc.
Power down protection is provided on all inputs
and outputs and 0 to 7V can be acc epted on
inputs with no regard to the supply voltage. This
device can be used to interface 5V to 3V since all
inputs are equipped with TTL threshold
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and t ransient exces s
voltage.

TSSOP

ORDER CODES

PACKAGE TUBE T & R

TSSOP 74VHCT16240ATTR

PIN CONNECTION

1/10February 2003

74VCHT16240A

INPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

11G

2, 3, 5, 6 1Y1

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

24 4G

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

48 2G
4, 10, 15, 21,

28, 34, 39, 45

7, 18, 31, 42

to 1Y4 Data Outputs
to 2Y4 Data Outputs
to 3Y4 Data Outputs
to 4Y4 Data Outputs

GND Ground (0V)

V

CC

Output Enable Input

Output Enable Input
Output Enable Input

Output Enable Input

Positive Supply Voltage

IEC LOGIC SYMBOLS

TRUTH TABLE

INPUTS OUTPUT

G

LLH
LHL

HXZ

X : Don‘tCare
Z : High Impedance

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An Yn

74VCHT16240A

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

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

1) Output inOFFState

2) Highor Low State

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V

V
V
T

dt/dv

1) Output inOFFState

2) Highor Low State

3) VINfrom 0.8V to 2V

Supply Voltage

CC

DC Input Voltage

I

DC Output Voltage (see note 1)

O

DC Output Voltage (see note 2) -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

I

Output Voltage (see note 1)

O

Output Voltage (see note 2) 0 to V

O

Operating Temperature

op

Input Rise and Fall Time (see note 3) (V

=5.0±0.5V)

CC

-0.5 to +7.0 V

-0.5 to +7.0 V

-0.5 to +7.0 V

-20 mA

± 20 mA
± 25 mA
± 50 mA

-65 to +150 °C
300 °C

4.5 to 5.5 V
0 to 5.5 V
0 to 5.5 V

CC

-55 to 125 °C
0 to 20 ns/V

V

V

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