74ACTQ245

74ACQ245, 74ACTQ245 Quiet SeriesTM Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs

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74ACQ245, 74ACTQ245 Quiet SeriesTM Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs

March 2007

74ACQ245, 74ACTQ245 Quiet SeriesTM Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs
Features
ICC and IOZ reduced by 50% Guaranteed simultaneous switching noise level and

General Description
The ACQ/ACTQ245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus-oriented applications. Current sinking capability is 24mA at both the A and B ports. The Transmit/Receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active-HIGH) enables data from A Ports to B Ports; Receive (activeLOW) enables data from B Ports to A Ports. The Output Enable input, when HIGH, disables both A and B ports by placing them in a HIGH Z condition. The ACQ/ACTQ utilizes Fairchild Quiet SeriesTM technology to guarantee quiet output switching and improve dynamic threshold performance. FACT Quiet SeriesTM features GTOTM output control and undershoot corrector in addition to a split ground bus for superior performance.

dynamic threshold performance
Guaranteed pin-to-pin skew AC performance Improved latch-up immunity 3-STATE outputs drive bus lines or buffer memory

address registers Outputs source/sink 24mA Faster prop delays than the standard ACT245

Ordering Information
Order Number
74ACQ245SC 74ACQ245SJ 74ACTQ245SC 74ACTQ245SJ 74ACTQ245QSC 74ACTQ245MSA 74ACTQ245MTC 74ACTQ245MTCX NL(1)

Package Number
M20B M20D M20B M20D MQA20 MSA20 MTC20 MTC20

Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering number. Pb-Free package per JEDEC J-STD-020B. Note: 1. Device available in Tape and Reel only.

FACTTM, Quiet SeriesTM, FACT Quiet SeriesTM, and GTOTM are trademarks of Fairchild Semiconductor Corporation. 1989 Fairchild Semiconductor Corporation 74ACQ245, 74ACTQ245 Rev. 1.4 www.fairchildsemi.com