Fairchild Semiconductor 74VCX32245 Datasheet

Preliminary

August 2001
Revised August 2001

74VCX32245
Low Voltage 32-Bit Bidirectional Tr ans ceiver

with 3.6V Tolerant Inputs and Outputs (Preliminary)

74VCX32245 Low Voltage 32-Bit Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs (Preliminary)

General Description

The VCX32245 contains thirty-two non-inverting bidirec­tional buffers with 3-STATE outputs and is intended for bus
oriented applications. The device is byte control led. Each
byte has separate 3-STATE control inputs which can be
shorted together for full 32-bit operation. Th e T/R
determine the dire ction of data flow through the device.
The OE

inputs disable bo th the A and B ports by placing

them in a high impedance state.
The 74VCX32245 is designed for low voltage (1.65V to

3.6V) V
The 74VCX32245 i s fabricated with an advanc ed CMOS

technology to achieve high speed operation while maintain­ing low CMOS power dissipation.

applications with I/O compatibility up to 3.6V.

CC

inputs

Features

■ 1.65V–3.6V VCC supply operation

■ 3.6V tolerant inputs and outputs

■ t

PD

2.5 ns max for 3.0V to 3.6V V

3.0 ns max for 2.3V to 2.7V V

6.0 ns max for 1.65V to 1.95V V

■ Power-down high impedance inputs and outputs

■ Supports live insertion/withdrawal (Note 1)

■ Static Drive (I

±24 mA @ 3.0V V
±18 mA @ 2.3V V
±6 mA @ 1.65V V

■ Uses patented noise/EMI reductio n circuitr y

■ Latchup performance exceeds 300 mA

■ ESD performance:

Human body model
Machine model

■ Packaged in plastic Fine-Pitch Ball Grid Array (FBGA)

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

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

down, OE
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.

OH/IOL

)

CC
CC

>200V

Ordering Code:

Order Number Package Number Package Description

74VCX32245GX
(Note 2)

Note 2: BGA package available in Tape and Reel only.

BGA96A 96-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide

[Tape and Reel]

CC
CC

CC

CC

> 2000V

Logic Symbol

© 2001 Fairchild Semiconductor Corporation DS500415 www.fairchildsemi.com

Preliminary

Connection Diagram

74VCX32245

(Top Thru View)

Truth Tables

Inputs

OE

T/R

1

1

L L Bus B0–B7 Data to Bus A0–A
L H Bus A0–A7 Data to Bus B0–B

H X HIGH Z State on A0–A7, B0–B

Inputs

OE

T/R

2

2

LLBus B
L H Bus A8–A15 Data to Bus B8–B
H X HIGH Z State on A8–A15, B8–B

Inputs

OE

T/R

3

3

L L Bus B16–B23 Data to Bus A16–A
L H Bus A16–A23 Data to Bus B16–B

H X HIGH Z State on A16–A23, B16–B

Inputs

OE

T/R

4

4

L L Bus B24–B31 Data to Bus A24–A
L H Bus A24–A31 Data to Bus B24–B

H X HIGH Z State on A24–A31, B24–B

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

Outputs

Outputs

Data to Bus A8–A

8–B15

Outputs

Outputs

Pin Descriptions

Pin Names Description

OE
T/R
A

0–A31

B

0–B31

n

n

Output Enable Input (Active LOW)
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs

FBGA Pin Assignments

123456

A B
B B
C B
D B
E B
F B
G B13B12GND GND A12A

H B

J B17B16T/R3OE3A
K B
L B

7
7

7

M B23B22GND GND A22A
N B
P B
R B

T B

15
15

Logic Diagram

15

23
23

23

31
31

31

B0T/R1OE1A

1

B2GND GND A2A

3

B4V

5
7
9

11B10VCCVCCA10A11

14B15

19B18
21B20VCCVCCA20A21

25B24
27B26VCCVCCA26A27
29B28

30B31

CCVCCA4

B6GND GND A6A
B8GND GND A8A

T/R2OE2A

GND GND A18A

GND GND A24A

GND GND A28A
T/R4OE4A

A

0

A

15A14
16A17

31A30

1
3
5
7
9

13

19

23
25

29

www.fairchildsemi.com 2

Absolute Maximum Ratings(Note 3) Recommended Operating

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

Outputs 3-STATE

Outputs Active (Note 4)
DC Input Diode Current (I
DC Output Diode Current (I

V

< 0V −50 mA

O

V

> V

O

CC

) −0.5V to +4.6V

I

)

O

−0.5V to +4.6V

−0.5 to V

) VI < 0V −50 mA

IK

)

OK

CC

+50 mA

+ 0.5V

DC Output Source/Sink Current

) ±50 mA

(I

OH/IOL

DC V

or Ground Current per

CC

Supply Pin (I
Storage Temperature Range (T

or Ground) ±100 mA

CC

) −65°C to +150°C

STG

Conditions

Power Supply

Operating 1.65V to 3.6V

Data Retention Only 1.2V to 3.6V
Input Voltage
Output Voltage (V

Output in Active States 0V to V

Output in 3-STATE 0.0V to 3.6V
Output Current in I

VCC = 3.0V to 3.6V ±24 mA

= 2.3V to 2.7V ±18 mA

V

CC

V

= 1.65V to 2.3V ±6 mA

CC

Free Air Operating Temperature (T
Minimum Input Edge Rate (

V

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

IN

Note 3: The “Absolute Maximum Ratings” are those value s beyond which
the safety of the d evice cannot b e guaranteed . The device sh ould not be
operated at thes e limits. The param etric values define d in the “Electrical
Characteristics” table are not guaran teed at the Absolut e Maximum Rat­ings. The Recommended Operating C onditions tables will define the condi­tions for actual device oper ation.

Absolute Maximum Rating must be observed.

Note 4: I

O

Note 5: Floating or unused pi n (inputs or I/O's) must be held HIGH or LOW.

(Note 5)

)

O

OH/IOL

) −40°C to +85°C

A

∆t/∆V)

Preliminary

74VCX32245

−0.3V to 3.6V

CC

DC Electrical Characteristics (2.7V < V

Symbol Parameter Conditions

V

IH

V

IL

V

OH

V

OL

I

I

I

OZ

I

OFF

I

CC

∆I

Note 6: Outputs disabled or 3-STATE only.

HIGH Level Input Voltage 2.7–3.6 2.0 V
LOW Level Input Voltage 2.7–3.6 0.8 V
HIGH Level Output Voltage IOH = −100 µA2.7–3.6 VCC − 0.2

LOW Level Output Voltage IOL = 100 µA2.7–3.6 0.2

Input Leakage Current 0V ≤ VI ≤ 3.6V 2.7–3.6 ±5.0 µA
3-STATE Output Leakage 0V ≤ VO ≤ 3.6V

Power Off Leakage Current 0V ≤ (VI, VO) ≤ 3.6V 0 10 µA
Quiescent Supply Current VI = VCC or GND 2.7–3.6 40

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

CC

I

= −12 mA 2.7 2.2

OH

= −18 mA 3.0 2.4

I

OH

IOH = −24 mA 3.0 2.2

= 12 mA 2.7 0.4

I

OL

IOL = 18 mA 3.0 0.4
I

= 24 mA 3.0 0.55

OL

VI = VIH or V

VCC ≤ (VI, VO) ≤ 3.6V (Note 6) 2.7–3.6 ±40

CC

IL

≤ 3.6V)

V

CC

(V)

2.7–3.6 ±10 µA

Min Max Units

V

V

µA

3 www.fairchildsemi.com