SN74ABTE16246

Features:

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


Pinout




Specifications

Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .  . . 0.5 V to 7 V
Input voltage range, V_I (except I/O ports) (see Note 1) . . . . . . . . . . . . . . . .. . . . . 0.5 V to 7 V
Voltage range applied to any output in the high or power-off state, V_O . . . . .  .  0.5 V to 5.5 V
Current into any output in the low state, I_O . . . . . . . . . . . . . . . . . . . . . . . . . . ..   .. . .. . . 128 mA
Input clamp current, I_IK (V_I < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 18 mA
Output clamp current, I_OK (V_O < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   . .. . . . 50 mA
Package thermal impedance, _JA (see Note 2): DGG package . . . . . . . . . . . . . . . . .. . .. . 89°C/W
                                                                          DL package . . . . . . . . . . . . . . . . .  . . . . . 94°C/W
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 65°C to 150°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.

             2. The package thermal impedance is calculated in accordance with JESD 51.

Description

The 'ABTE16246 devices are 11-bit noninverting transceivers designed for asynchronous two-way communication between buses. These 'ABTE16246 devices have open-collector and 3-state outputs. They allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE ) input can be used to disable the device so that the buses are effectively isolated. When OE is low, the device is active.

The B port of 'ABTE16246 has an equivalent 25- series output resistor to reduce ringing. Active bus-hold inputs on the B port hold unused or floating inputs at a valid logic level.The A port provides for the precharging of the outputs via V_CCBIAS, which establishes a voltage between 1.3 V and 1.7 V when V_CC is not connected.The SN54ABTE16246 is characterized for operation over the full military temperature range of 55°C to 125°C.The SN74ABTE16246 is characterized for operation from 40°C to 85°C.