SN54ABTE16245, SN74ABTE16245 16-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SCBS226F - JULY 1993 - REVISED AUGUST 1996

features

Support the VME64 ETL Specification
Reduced, TTL-Compatible, Input Threshold Range
High-Drive Outputs (I_OH= -60 mA, I_OL = 90 mA) Support 25- Incident-Wave Switching
V_CCBIAS Pin Minimizes Signal Distortion During Live Insertion
Internal Pullup Resistor on Keeps Outputs in High-Impedance State During Power Up or Power Down
Members of the Texas Instruments (TI) Widebus^TM Family
State-of-the-Art EPIC-IIB^TM BiCMOS Design Significantly Reduces Power Dissipation
Distributed V_CC and GND Pin Configuration Minimizes High-Speed Switching Noise
25- Series Damping Resistor on B Port
Bus Hold on Data Inputs Eliminates the Need for External Pullup Resistors
Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages and 380-Mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Spacings

Widebus and EPIC-IIB are trademarks of Texas Instruments

description

The 'ABTE16245 are 16-bit (dual-octal) noninverting 3-statetransceivers designed for synchronous two-way communication betweendata buses. The control-function implementation minimizes externaltiming requirements. These devices can be used as two 8-bittransceivers or one 16-bit transceiver. They allow data transmissionfrom the A bus to the B bus or from the B bus to the A bus, dependingon the logic level at the direction-control (DIR) input. Theoutput-enable () input can beused to disable the device so that the buses are effectivelyisolated. When is low, thedevice is active.

The B port has a 25-series output resistor to reduce ringing. Active bus-hold inputs arealso found on the B port to hold unused or floating inputs at a validlogic level.

The A port provides for the precharging of the outputs viaV_CCBIAS, which establishes a voltage between 1.3 V and 1.7V when V_CC is not connected.

The SN74ABTE16245 is available in TI's shrink small-outlinepackage (DL), which provides twice the I/O pin count andfunctionality of standard small-outline packages in the sameprinted-circuit-board area.

The SN54ABTE16245 is characterized for operation over the fullmilitary temperature range of -55°C to 125°C. TheSN74ABTE16245 is characterized for operation from -40°C to85°C.

Title: 16-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
Product Family: BACKPLANE LOGIC (GTL, FB/FBPLUS, BTL, ETL)
Device Functionality: 16-BIT INCIDENT-WAVEBUS TRANSCEIVER
Orderable Devices: SNJ54ABTE16245WD, SN74ABTE16245DGGR, SN74ABTE16245DL, SN74ABTE16245DLR

View the complete PDF datasheet: scbs226f.pdf (134 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:SN54ABTE16245, SN74ABTE16245

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