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74VCX2245: DescriptionLow Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26W Series Resistors in B Outputs; File Size597KB，12 Pages; ManufacturerFairchild; Websitehttp://www.fairchildsemi.com/

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Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26W Series Resistors in B Outputs

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74VCX2245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26: Series

Resistors in B Outputs

June 1999

Revised April 2005

74VCX2245

Low Voltage Bidirectional Transceiver

with 3.6V Tolerant Inputs and Outputs

and 26: Series Resistors in B Outputs

General Description

The VCX2245 contains eight non-inverting bidirectional

buffers with 3-STATE outputs and is intended for bus ori-

ented applications. The T/R input determines the direction

of data flow. The OE input disables both the A and B ports

by placing them in a high impedance state.

The 74VCX2245 is designed for low voltage (1.4V to 3.6V)

applications with I/O compatibility up to 3.6V. The

VCX2245 is also designed with 26

series resistance in

the B Port outputs. This design reduces line noise in appli-

cations such as memory address drivers, clock drivers, and

bus transceivers transmitters

The 74VCX2245 is fabricated with an advanced CMOS

technology to achieve high-speed operation while main-

taining low CMOS power dissipation.

Features

1.4V - 3.6V V

supply operation

3.6V tolerant inputs and outputs

series resistors in B Port outputs

Power-off high impedance inputs and outputs

Supports Live Insertion and Withdrawal (Note 1)

(A to B)

4.4 ns max for 3.0V to 3.6V V

Static Drive (I

B outputs):

12 mA @ 3.0V V

Uses patented Quiet Series

noise/EMI reduction

circuitry

Latchup performance exceeds JEDEC 78 conditions

ESD performance:

Human body model

2000V

Machine model

200V

Leadless DQFN Pb-Free package

Note 1:

To ensure the high impedance state during power up and power

down, OE

should be tied to V

through a pull up resistor. The minimum

value of the resistor is determined by the current sourcing capability of the

driver.

Ordering Code:

Order Number

74VCX2245WM

74VCX2245BQX

(Note 2)

74VCX2245MTC

Package

Number

M20B

MLP020B

MTC20

Package Description

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC

MO-241, 2.5 x 4.5mm

20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Pb-Free package per JEDEC J-STD-020B.

Note 2:

DQFN package available in Tape and Reel only.

Logic Symbol

Pin Descriptions

Pin Names

T/R

–A

–B

Description

Output Enable Input (Active LOW)

Transmit/Receive Input

Side A Inputs or 3-STATE Outputs

Side B Inputs or 3-STATE Outputs

Quiet Series

is a trademark of Fairchild Semiconductor Corporation.

DS500170

www.fairchildsemi.com

74VCX2245 Related Products

	74VCX2245	74VCX2245MTCX	74VCX2245MTC	74VCX2245WM	74VCX2245WMX
Description	Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26W Series Resistors in B Outputs	Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26W Series Resistors in B Outputs	Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26W Series Resistors in B Outputs	Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26W Series Resistors in B Outputs	Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26W Series Resistors in B Outputs
Is it Rohs certified?	-	conform to	conform to	conform to	conform to
Maker	-	Fairchild	Fairchild	Fairchild	Fairchild
Parts packaging code	-	TSSOP	TSSOP	SOIC	SOIC
package instruction	-	TSSOP, TSSOP20,.25	4.40 MM, MO-153AC, TSSOP-20	0.300 INCH, MS-013, SOIC-20	SOP, SOP20,.4
Contacts	-	20	20	20	20
Reach Compliance Code	-	unknow	unknow	unknow	unknow
Other features	-	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL	WITH DIRECTION CONTROL
Control type	-	COMMON CONTROL	COMMON CONTROL	COMMON CONTROL	COMMON CONTROL
Counting direction	-	BIDIRECTIONAL	BIDIRECTIONAL	BIDIRECTIONAL	BIDIRECTIONAL
series	-	ALVC/VCX/A	ALVC/VCX/A	ALVC/VCX/A	ALVC/VCX/A
JESD-30 code	-	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20
JESD-609 code	-	e3	e3	e3	e3
length	-	6.5 mm	6.5 mm	12.8015 mm	12.8015 mm
Load capacitance (CL)	-	30 pF	30 pF	30 pF	30 pF
Logic integrated circuit type	-	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER	BUS TRANSCEIVER
MaximumI(ol)	-	0.018 A	0.018 A	0.018 A	0.018 A
Humidity sensitivity level	-	1	1	1	1
Number of digits	-	8	8	8	8
Number of functions	-	1	1	1	1
Number of ports	-	2	2	2	2
Number of terminals	-	20	20	20	20
Maximum operating temperature	-	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-	-40 °C	-40 °C	-40 °C	-40 °C
Output characteristics	-	3-STATE WITH SERIES RESISTOR	3-STATE WITH SERIES RESISTOR	3-STATE WITH SERIES RESISTOR	3-STATE WITH SERIES RESISTOR
Output polarity	-	TRUE	TRUE	TRUE	TRUE
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	TSSOP	TSSOP	SOP	SOP
Encapsulate equivalent code	-	TSSOP20,.25	TSSOP20,.25	SOP20,.4	SOP20,.4
Package shape	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE	SMALL OUTLINE
method of packing	-	TAPE AND REEL	RAIL	RAIL	TAPE AND REEL
Peak Reflow Temperature (Celsius)	-	260	260	260	260
power supply	-	3.3 V	3.3 V	3.3 V	3.3 V
Prop。Delay @ Nom-Su	-	3.5 ns	3.5 ns	3.5 ns	3.5 ns
propagation delay (tpd)	-	16.8 ns	16.8 ns	16.8 ns	16.8 ns
Certification status	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	-	1.2 mm	1.2 mm	2.642 mm	2.642 mm
Maximum supply voltage (Vsup)	-	3.6 V	3.6 V	3.6 V	3.6 V
Minimum supply voltage (Vsup)	-	1.4 V	1.4 V	1.4 V	1.4 V
Nominal supply voltage (Vsup)	-	1.5 V	1.5 V	1.5 V	1.5 V
surface mount	-	YES	YES	YES	YES
technology	-	CMOS	CMOS	CMOS	CMOS
Temperature level	-	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	-	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	-	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	-	0.65 mm	0.65 mm	1.27 mm	1.27 mm
Terminal location	-	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	-	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
translate	-	N/A	N/A	N/A	N/A
width	-	4.4 mm	4.4 mm	7.493 mm	7.493 mm
Base Number Matches	-	1	1	1	1

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