Datasheet

ManualsBrandsFAIRCHILD SEMICONDUCTOR ManualsLogic ICsLogic IC - Buffer, driver TSSOP 20

74LVT244, 74LVTH244 — Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs

74LVT244, 74LVTH244 Rev. 1.5.0

January 2008

74LVT244, 74LVTH244

Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs

Features

■

Input and output interface capability to systems at

5V V

■

Bushold data inputs eliminate the need for external

pull-up resistors to hold unused inputs (74LVTH244),

also available without bushold feature (74LVT244)

■

Live insertion/extraction permitted

■

Power Up/Down high impedance provides glitch-free

bus loading

■

Outputs source/sink –32mA/+64mA

■

Functionally compatible with the 74 series 244

■

Latch-up performance exceeds 500mA

■

ESD performance:

– Human-body model

2000V

– Machine model

200V

– Charged-device model

1000V

General Description

The LVT244 and LVTH244 are octal buffers and line

drivers designed to be employed as memory address

drivers, clock drivers and bus oriented transmitters or

receivers which provide improved PC board density.

The LVTH244 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 low-

voltage (3.3V) V

applications, but with the capability to

provide a TTL interface to a 5V environment. The LVT244

and LVTH244 are fabricated with an advanced BiCMOS

technology to achieve high speed operation similar to 5V

ABT while maintaining low power dissipation.

Ordering Information

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

All packages are lead free per JEDEC: J-STD-020B standard.

Order Number

Package

Number Package Description

74LVT244WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

74LVT244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74LVT244MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide

74LVT244MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm

Wide

74LVTH244WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

74LVTH244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74LVTH244MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide

74LVTH244MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm

Wide

Summary of content (10 pages)

PAGE 1
74LVT244, 74LVTH244 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs Features General Description ■ Input and output interface capability to systems at The LVT244 and LVTH244 are octal buffers and line drivers designed to be employed as memory address drivers, clock drivers and bus oriented transmitters or receivers which provide improved PC board density.
PAGE 2
Logic Symbol IEEE/IEC Pin Description Pin Names Description OE1, OE2 3-STATE Output Enable Inputs I0–I7 Inputs O0–O7 Output Truth Tables Inputs OE1 In Outputs (Pins 12, 14, 16, 18) L L L L H H H X Z OE2 In Outputs (Pins 3, 5, 7, 9) L L L L H H H X Z Inputs H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance ©1999 Fairchild Semiconductor Corporation 74LVT244, 74LVTH244 Rev. 1.5.0 www.fairchildsemi.
PAGE 3
Symbol VCC Parameter Rating Supply Voltage –0.5V to +4.6V VI DC Input Voltage –0.5V to +7.0V VO DC Output Voltage Output in 3-STATE –0.5V to +7.0V State(1) Output in HIGH or LOW –0.5V to +7.
PAGE 4
Symbol Parameter T A =–40°C to +85°C VCC (V) 2.7 Conditions II = –18mA VIK Input Clamp Diode Voltage VIH Input HIGH Voltage 2.7–3.6 VIL Input LOW Voltage 2.7–3.6 VO ≤ 0.1V or VO ≥ VCC – 0.1V VOH Output HIGH Voltage 2.7–3.6 IOH = –100µA Output LOW Voltage II(HOLD) II(OD)(3) II Max. Units –1.2 2.0 0.8 VCC–0.2 3.0 IOH = –32mA 2.0 IOL = 100µA 0.2 IOL = 24mA 0.5 IOL = 16mA 0.4 IOL = 32mA 0.5 IOL = 64mA 0.55 75 VI = 2.0V –75 Bushold Input Minimum Drive 3.
PAGE 5
TA = 25°C Conditions Symbol Parameter VCC (V) CL = 50pF, RL = 500Ω VOLP Quiet Output Maximum Dynamic VOL 3.3 (8) VOLV Quiet Output Minimum Dynamic VOL 3.3 (8) Min. Typ. Max. Units 0.8 V –0.8 V Notes: 7. Characterized in SOIC package. Guaranteed parameter, but not tested. 8. Max number of outputs defined as (n). n–1 data inputs are driven 0V to 3V. Output under test held LOW. AC Electrical Characteristics TA = –40°C to +85°C CL = 50pF, RL = 500Ω VCC = 3.3V ± 0.
PAGE 6
13.00 12.60 A 11.43 20 11 B 9.50 10.65 7.60 10.00 7.40 2.25 1 10 0.51 0.35 PIN ONE INDICATOR 0.25 M 0.65 1.27 1.27 C B A LAND PATTERN RECOMMENDATION 2.65 MAX SEE DETAIL A 0.33 0.20 C 0.75 0.25 X 45° SEATING PLANE NOTES: UNLESS OTHERWISE SPECIFIED (R0.10) GAGE PLANE (R0.10) 0.10 C 0.30 0.10 0.25 8° 0° A) THIS PACKAGE CONFORMS TO JEDEC MS-013, VARIATION AC, ISSUE E B) ALL DIMENSIONS ARE IN MILLIMETERS. C) DIMENSIONS DO NOT INCLUDE MOLD FLASH OR BURRS. D) CONFORMS TO ASME Y14.
PAGE 7
4LVT244, 74LVTH244 — Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs Physical Dimensions (Continued) Figure 2. 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision.
PAGE 8
74LVT244, 74LVTH244 — Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs Physical Dimensions (Continued) Figure 3. 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision.
PAGE 9
74LVT244, 74LVTH244 — Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs Physical Dimensions (Continued) Figure 4. 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision.
PAGE 10
ACEx® Build it Now™ CorePLUS™ CROSSVOLT™ CTL™ Current Transfer Logic™ EcoSPARK® EZSWITCH™ * ™ PDP-SPM™ Power220® POWEREDGE® Power-SPM™ PowerTrench® Programmable Active Droop™ QFET® QS™ QT Optoelectronics™ Quiet Series™ RapidConfigure™ SMART START™ SPM® STEALTH™ SuperFET™ SuperSOT™-3 SuperSOT™-6 SuperSOT™-8 FPS™ FRFET® Global Power ResourceSM Green FPS™ Green FPS™e-Series™ GTO™ i-Lo™ IntelliMAX™ ISOPLANAR™ MegaBuck™ MICROCOUPLER™ MicroFET™ MicroPak™ MillerDrive™ Motion-SPM™ OPTOLOGIC® OPTOPLANAR® ® Fairc