Fairchild Semiconductor 74VCX162245MTDX, 74VCX162245MTD, 74VCX162245CW Datasheet

October 1996
Revised April 1999

74VCX162245 Low V oltage 16-Bi t Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26Ω Series

Resistors in A Port Outputs

© 1999 Fairchild Semiconductor Corporation DS500048.prf www.fairchildsemi.com

74VCX162245
Low Voltage 16-Bit Bidirectional Transceiver with 3.6V

Tolerant Inputs and Outputs and 26 Ω Series Resistors in
A Port Outputs

General Description

The VCX162245 contains sixteen non-inverting bidirec­tional buffers with 3-STATE outputs and is intended for bus
oriented applications. The device is byte controlled. Each
byte has separate 3-STATE control inputs which can be
shorted together for full 16-b it operation. The T/R

inputs
determine the dire ction of data flow through the device.
The OE

inputs disable both the A and B po rts by placing

them in a high impedance state.
The 74VCX162245 is designed for low v oltage (1.65V to

3.6V) V

CC

applications with I/O compatibility up to 3.6V.

The 74VCX162245 i s also designed with 26 Ω ser ies resis­tance in the A Port outputs. This de sign redu ces line n oise
in applications such as memory address drivers, clock driv­ers, and bus transceivers/transmitters.

The 74VCX162245 is fab ricated with an advance d CMOS
technology to achieve high speed operation while maintain­ing low CMOS power dissipation.

Features

■ 1.65V–3.6V VCC supply operation

■ 3.6V tolerant inputs and outputs

■ 26Ω series resistors in A port outputs

■ t

PD

(B to A)

3.4 ns max for 3.0V to 3.6V V

CC

4.3 ns max for 2.3V to 2.7V V

CC

8.6 ns max for 1.65V to 1.95V V

CC

■ Power-down high impedance inputs and outputs

■ Supports live insertion/withdrawal (Note 1)

■ Static Drive (I

OH/IOL

A outputs)

±12 mA @ 3.0V V

CC

±8 mA @ 2.3V V

CC

±3 mA @ 1.65V V

CC

■ Uses patented noise/EMI reduction circuitry

■ Latchup performance exceeds 300 mA

■ ESD performance:

Human body model > 2000V
Machine model >200V

Note 1: To ensure the high-impedance state d uring power up or power
down, OE

should be tied to VCC through a pull-up r esistor; the min imum

value of the res istor is d eter mine d by the cu rre nt-sou rcin g ca pa bility of t he
driver.

Ordering Code:

Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering code.

Logic Symbol Pin Descriptions

Order Number Package Number Package Description

74VCX162245MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide

Pin

Description

Names

OE

n

Output Enable Input

T/R

n

Transmit/Receive Input

A

0–A15

Side A Inputs or 3-STATE Outputs

B

0–B15

Side B Inputs or 3-STATE Outputs

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74VCX162245

Connection Diagram Tr uth Tables

H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial (HIGH or LOW, inputs and I/O’s may not float)
Z = High Impedance

Logic Diagram

Inputs

Outputs

OE

1

T/R

1

L L Bus B0–B7 Data to Bus A0–A

7

L H Bus A0–A7 Data to Bus B0–B

7

H X HIGH Z State on A0–A7, B0–B

7

Inputs

Outputs

OE

2

T/R

2

L L Bus B8–B15 Data to Bus A8–A

15

L H Bus A8–A15 Data to Bus B8–B

15

H X HIGH Z State on A8–A15, B8–B

15

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74VCX162245

Absolute Maximum Ratings(Note 2)

Recommended Operating
Conditions

(Note 4)

Note 2: The “Absolute Maximum Ratings ” are those val ues beyond w hich
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the Absolute Maximum Rat­ings. The Recommended Operating Con ditions tables will define th e c ondi­tions for actual device operation.

Note 3: I

O

Absolute Maximum Rating must be observed.

Note 4: Floating or unused pin s (inputs or I/O's) must b e held HIGH or
LOW.

DC Electrical Characteristics (2.7V < VCC ≤ 3.6V)

Note 5: Outputs disab led or 3-STATE only.

Supply Voltage (VCC) −0.5V to +4.6V
DC Input Voltage (V

I

) −0.5V to +4.6V

Output Voltage (V

O

)
Outputs 3-State −0.5V to +4.6V
Outputs Active (Note 3) −0.5 to V

CC

+ 0.5V

DC Input Diode Current (I

IK

) VI < 0V −50 mA

DC Output Diode Current (I

OK

)

V

O

< 0V −50 mA

V

O

> V

CC

+50 mA

DC Output Source/Sink Current

(I

OH/IOL

) ±50 mA

DC V

CC

or Ground Current per

Supply Pin (I

CC

or Ground) ±100 mA

Storage Temperature Range (T

STG

) −65°C to +150°C

Power Supply

Operating 1.65V to 3.6V
Data Retention Only 1.2V to 3.6V

Input Voltage −0.3V to 3.6V
Output Voltage (V

O

)

Output in Active States 0V to V

CC

Output in 3-STATE 0.0V to 3.6V

Output Current in I

OH/IOL

-A Outputs

V

CC

= 3.0V to 3.6V ±12 mA

V

CC

= 2.3V to 2.7V ±8 mA

V

CC

= 1.65V to 1.95V ±3 mA

Output Current in ± I

OH/IOL

-B Outputs

V

CC

= 3.0V to 3.6V ± 24mA

V

CC

= 2.3V to 2.7V ± 18mA

V

CC

= 1.65V to 2.3V ±6mA

Free Air Operating Temperature (T

A

) −40°C to +85°C

Minimum Input Edge Rate (∆t/∆V)

V

IN

= 0.8V to 2.0V, VCC = 3.0V 10 ns/V

Symbol Parameter Conditions

V

CC

Min Max Units

(V)

V

IH

HIGH Level Input Voltage 2.7–3.6 2.0 V

V

IL

LOW Level Input Voltage 2.7–3.6 0.8 V

V

OH

HIGH Level Output Voltage IOH = −100 µA 2.7–3.6 VCC − 0.2
A Outputs IOH = −6 mA 2.7 2.2 V

IOH = −8 mA 3.0 2.4

IOH = −12 mA 3.0 2.2
HIGH Level Output Voltage IOH = −100 µA 2.7–3.6 VCC − 0.2
B Outputs IOH = −12 mA 2.7 2.2 V

IOH = −18 mA 3.0 2.4

IOH = −24 mA 3.0 2.2

V

OL

LOW Level Output Voltage IOL = 100 µA 2.7–3.6 0.2
A Outputs IOL = 6 mA 2.7 0.4 V

IOL = 8 mA 3.0 0.55

IOL = 12 mA 3.0 0.8
LOW Level Output Voltage IOL = 100 µA 2.7–3.6 0.2
B Outputs IOL = 12 mA 2.7 0.4 V

IOL = 18 mA 3.0 0.4

IOL = 24 mA 3.0 0.55

I

I

Input Leakage Current 0V ≤ VI ≤ 3.6V 2.7–3.6 ±5.0 µA

I

OZ

3-STATE Output Leakage 0V ≤ VO ≤ 3.6V 2.7–3.6 ±10 µA

VI = VIH or V

IL

I

OFF

Power Off Leakage Current 0V ≤ (VI, VO) ≤ 3.6V 0 10 µA

I

CC

Quiescent Supply Current VI = VCC or GND 2.7–3.6 20

µA

VCC ≤ (VI, VO) ≤ 3.6V (Note 5) 2.7–3.6 ±20

∆I

CC

Increase in ICC per Input VIH = VCC − 0.6V 2.7–3.6 750 µA