Fairchild Semiconductor 74LVTH2244WMX, 74LVTH2244WM, 74LVTH2244SJX, 74LVTH2244SJ, 74LVTH2244MTCX Datasheet

© 1999 Fairchild Semiconductor Corporation DS012170 www.fairchildsemi.com

July 1999
Revised August 1999

74LVT2244 • 74LVTH2244 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs

74LVT2244 • 74LVTH2244
Low Voltage Octal Buffer/Line Driver

with 3-STATE Outputs

General Description

The LVT2244 and LVTH2244 are octal buffers and line
drivers designed to be employ ed as memory addres s driv­ers, clock drivers and bus oriented transmitters or receivers
which provides improved P C boa rd de nsi ty. The equivalent
25Ω-Series resistors helps reduce output overshoot and
undershoot.

The LVTH2244 data inputs include bushold, eliminating the
need for external pull-up resistors to hold unused inputs.

These octal buffers and line drivers are designed for low­voltage (3.3V) V

CC

applications, but wit h the capability to

provide a TTL interface to a 5V environment. The LVT2244
and LVTH2244 are fabricated with an advance d BiCMOS
technology to achieve h igh speed operation similar to 5V
ABT while maintaining low power dissipation.

Features

■ Input and output interface capability to systems at
5V V

CC

■ Equivalent 25Ω-Series resistors on outputs

■ Bushold data inputs elimina te the nee d for exte rnal pul l-

up resistors to hold unused inp uts (74LVTH2244), also
available without bushold feature (74LVT2244).

■ Live insertion/extraction per mitt ed

■ Power Up/Down high impedance provides glitch-free

bus loading

■ Outputs source/sink −12 mA/+12 mA

■ Latch-up performance exceeds 500 mA

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

IEEE/IEC

Connection Diagram

Order Number Package Number Package Description

74LVT2244WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74LVT2244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVT2244MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74LVTH2244WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74LVTH2244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVTH2244MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

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74LVT2244 • 74LVTH2244

Pin Descriptions Tr uth Tables

H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance

Pin Names Description

OE

1

, OE

2

3-STATE Output Enable Inputs

I

0–I7

Inputs

O

0–O7

Outputs

Inputs Outputs

(Pins 12, 14, 16, 18)

OE

1

I

n

LL L
LH H
H X Z

Inputs Outputs

(Pins 3, 5, 7, 9)

OE

2

I

n

LL L
LH H
H X Z