ST 74VCXHR162245TTR User Manual

74VCXHR162245

LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER

(3-STATE) WITH 3.6V TOLERANT INPUTS AND OUTPUTS

■ 3.6V TOLERANT INPUTS AND OUTPUTS

■ HIGH SPEED IN BOTH A, B OUTPUTS :

tPD= 3.4 ns (MAX.) at VCC= 3.0to 3.6V
tPD= 4.3 ns (MAX.) at VCC= 2.3to 2.7V

■ SYMMETRICAL IMPEDANCE OUTPUTS:

|IOH|=IOL= 12mA (MIN) at VCC= 3.0V
|IOH|=IOL= 8mA (MIN) at VCC= 2.3V

■ POWER DOWNPROTECTION ON INPUTS

AND OUTPUTS

■ 26Ω SERIE RESISTORS IN BOTH A AND B

PORT OUTPUTS

■ OPERATING VOLTAGE RANGE:

VCC(OPR) = 2.3V to 3.6V

■ PIN ANDFUNCTION COMPATIBLE WITH

74 SERIES HR162245

■ BUS HOLD PROVIDED ON BOTH SIDES

■ LATCH-UP PERFORMANCE EXCEEDS

300mA (JESD 17)

■ ESD PERFORMANCE:

HBM > 2000V (MIL STD 883 method 3015);
MM > 200V

ORDER CODES

PACKAGE TUBE T & R

TSSOP 74VCXHR162245TTR

PIN CONNECTION

TSSOP

DESCRIPTION

The 74VCXHR162245 is a low voltage CMOS 16
BIT BUS TRANSCEIVER (3-STATE) fabricated
with sub-micron silicon gate and five-layer metal
wiring C2MOS technology. Itis ideal for low power
and very high speed 2.3 to 3.6V applications; it
can be interfaced to 3.6V signal environment for
both inputs and outputs.

This IC is intended for two-way asynchronous
communication between data buses; the direction
of data transmission is determined by DIR input.
The two enable inputs nG can be used to disable
the device so that the buses are effectively
isolated. The device circuits is including 26Ω
series resistance in the A and B port outputs.
These resistors permit to reduce line noise in high
speed applications. Bus hold on data inputs is
provided in order to eliminate theneed for external
pull-up or pull-down resistor.

All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage. All floating bus terminals during High Z
State must be held HIGH or LOW.

1/10September 2001

74VCXHR162245

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1 1DIR Directional Control

2, 3,5,6, 8, 9,

11, 12

13, 14, 16,17,

19, 20, 22, 23

24 2DIR Directional Control
25 2G Output Enable Input

36, 35, 33,32,

30, 29, 27, 26

47, 46, 44,43,

41, 40, 38, 38

48 1G Output Enable Input

4, 10, 15, 21,
28, 34, 39, 45

7, 18, 31, 42

1B1 to 1B8 Data Inputs/Outputs

2B1 to 2B8 Data Inputs/Outputs

2A1 to 2A8 Data Inputs/Outputs

1A1 to 1A8 Data Inputs/Outputs

GND Ground (0V)

V

CC

Positive Supply Voltage

TRUTH TABLE

INPUTS FUNCTION OUTPUT

G DIR A BUS B BUS Yn

L L OUTPUT INPUT A = B
L H INPUT OUTPUT B = A

HXZZZ

X : Don‘t Care
Z : High Impedance

IEC LOGIC SYMBOLS

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74VCXHR162245

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V
V
V

I

I

OK

I

or I

I

CC

P

T

T

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

absolute maximum rating must be observed

1) I

O

2) V

< GND, VO>V

O

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V
V
V

I

OH,IOL

I

OH,IOL

T

dt/dv Input Rise and Fall Time (note 1) 0 to 10 ns/V

1) VINfrom 0.8V to 2V at VCC= 3.0V

Supply Voltage

CC

DC Input Voltage

I

DC Output Voltage (OFF State)

O

DC Output Voltage (High or Low State) (note 1) -0.5 to VCC+ 0.5

O

DC Input Diode Current

IK

DC Output Diode Current (note 2)
DC Output Current

O

DC VCCor Ground Current per Supply Pin

GND

Power Dissipation

D

Storage Temperature

stg

Lead Temperature (10 sec)

L

CC

Supply Voltage

CC

Input Voltage

I

Output Voltage (OFF State)

O

Output Voltage (High or Low State) 0 to V

O

High or Low Level Output Current (VCC= 3.0 to 3.6V)
High or Low Level Output Current (VCC= 2.3 to 2.7V)
Operating Temperature

op

-0.5 to +4.6 V

-0.5 to +4.6 V

-0.5 to +4.6 V
V

-50 mA

-50 mA

± 50 mA

± 100 mA

400 mW

-65 to +150 °C

300 °C

2.3 to 3.6 V

-0.3 to 3.6 V
0 to 3.6 V

CC

V

± 12 mA

± 8mA

-55 to 125 °C

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