AM26S12ADC

Datasheet AM26S12/AM26S12A Quad Bus Transceivers The Am26S12/Am26S12A are high-speed quad Bus Transceivers consisting of four high-speed bus drivers with open-collector outputs capable of linking 100mA at 0.7 volts and four high-speed bus receivers. Each driver output Is brought out and also connected internally to the high­speed bus receiver. The receiver has an input hysteresis characteristic and a TTL output capable of driving ten TTL loads. An active LOW, two-input AND gate controls the four drivers so that outputs of different device drivers can be connected together for party-line operation. The enable inputs can be conveniently driven by active LOW decoders such as the Am54S/74S139. Rochester Electronics Manufactured Components Rochester branded components are manufactured using either die/wafers purchased from the original suppliers or Rochester wafers recreated from the original IP. All re-creations are done with the approval of the Original Component Manufacturer (OCM). Parts are tested using original factory test programs or Rochester developed test solutions to guarantee product meets or exceeds the OCM data sheet. Quality Overview • ISO-9001 • AS9120 certification • Qualified Manufacturers List (QML) MIL-PRF-35835 • Class Q Military • Class V Space Level • Qualified Suppliers List of Distributors (QSLD) • Rochester is a critical supplier to DLA and meets all industry and DLA standards. Rochester Electronics, LLC is committed to supplying products that satisfy customer expectations for quality and are equal to those originally supplied by industry manufacturers. The original manufacturer’s datasheet accompanying this document reflects the performance and specifications of the Rochester manufactured version of this device. Rochester Electronics guarantees the performance of its semiconductor products to the original OCM specifications. ‘Typical’ values are for reference purposes only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. FOR REFERENCE ONLY © 2019 Rochester Electronics, LLC. All Rights Reserved 04082019 To learn more, please visit www.rocelec.com Am26S12/Am26S12A Quad Bus Transceivers DISTINCTIVE CHARACTERISTICS • Quad high-speed bus transceivers • Driver outputs can sink 100mA at o.7V • Choice of receiver hysteresis characteristics typically GENERAL DESCRIPTION The Am26S12/Am26S12A are high-speed quad Bus Transceivers consisting of four high-speed bus drivers with open-collector outputs capable of linking 100mA at o. 7 volts and four high-speed bus receivers. Each driver output Is brought out and also connected internally to the high­ speed bus receiver. The receiver has an input hysteresis characteristic and a TTL output capable of driving ten TTL loads. can be tenninated at both ends, and still give considerable noise margin at the receiver. The hysteresis characteristic of the Am26S12 receiver is chosen so that the receiver output switches to a HIGH logic level when the receiver input is at a HIGH logic level and moves to 1.4 volts typically, and switches to a LOW logic level whsn the receiver input is at a LOW logic level and moves to 2.0 volts typically. This hysteresis characteristic makes the receiver very insensitive to noise on the bus. An active LOW, two-input AND gate controls the four drivers so that outputs of different device drivers can be connected together for party-line operation. The enable inputs can be conveniently driven by active LOW decoders such as the Am54S/74S139. The Am26S12A is functionally identical to the Am26S12 but has a different hysteresis characteristic so that the output switches with the input being typically at 1.2 volts or 2.25 volts. In both devices the threshold margin, the difference between the switching points, is greater than 0.4 volts. The high-drive capeblllty in the LOW state allows party-line operation with a line impedance as low as 100{1 The llne BLOCK DIAGRAM i I ,, 'O ,, ., ., z, z, lo ,, ., Ill Z3 80001800 RELATED PRODUCTS Part No. Description 26810 26811 2915A 2916A 2917A Quad Quad Quad Quad Quad Bus Transceiver Bus Transceiver Three-State Bus Transceiver with Interface Logic Three-State Bus Transceiver with Interface Logic Three-State Bus Transceiver with Interface Logic 05395A/05396A 10-15 Refer to Page 13-1 for Essential Information on Military Oev,ces