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This document describes the product specifications and features of the 74ABT16827A and 74ABTH16827A, two 20-bit buffers/line drivers. They feature non-inverting (3-State) outputs, multiple VCC and GND pins to minimize switching noise, live insertion/extraction capability, 3-State output buffers, power-up 3-State, bus-hold data inputs in 74ABTH16827A to eliminate the need for external pull-up resistors, output capability of +64mA/-32mA, latch-up protection exceeding 500mA, and ESD protection exceeding 2000V.

The74ABT16825A/74ABTH16825A is a 18-bit buffer/line driver produced by Philips Semiconductors company. It has low static and dynamic power consumption, high speed and high output drive capability. It can provide high performance bus interface buffering for wide data/address paths or buses carrying parity. They have NOR Output Enables (nOE1, nOE2) for maximum control flexibility. Two options are available, 74ABT16825A which does not have the bus-hold feature and 74ABTH16825A which incorporates the bus-hold feature.

74ABT16823A/74ABTH16823A is a 18-bit bus interface D-type flip-flop with reset and enable (3-State) produced by Philips Semiconductors

74ABT16821A is a 20-bit bus-interface D-type flip-flop with positive-edge trigger (3-State) produced by Philips Semiconductors.

SN54ABT16657 and SN74ABT16657 are 16-bit transceivers with parity generators/checkers and 3-state outputs. They feature state-of-the-art EPIC-ΙΙB BiCMOS design that significantly reduces power dissipation and exceeds JEDEC standard JESD-17 latch-up performance. The products have distributed VCC and GND pin configuration to minimize high-speed switching noise. They utilize a flow-through architecture for optimized PCB layout. The high-drive outputs (–32-mA IOH, 64-mA IOL) provide strong output capabilities. Package options include plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) packages, as well as 380-mil Fine-Pitch Ceramic Flat (WD) package with 25-mil center-to-center spacings.

74ABT16652 is a 16-bit bidirectional transceiver/register with 3-state outputs manufactured by Philips Semiconductors. It has independent A and B bus registers, multiple VCC and GND pins, power-on 3-state, power-up reset, real-time and stored data multiplexing, etc.

The ABT16652 consists of sixteen bus transceiver circuits with D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Each byte has separate control inputs which can be shorted together for full 16-bit operation. Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes to HIGH logic level. Output Enable pins (OEAB, OEBA) are provided to control the transceiver function.

16-bit bus transceivers and registers with 3-state outputs

74ABT16646 is a 16-bit bus transceiver/register (3-State) product produced by Philips. It has independent A and B bus registers, multiple VCC and GND pins, minimized switching noise, live insertion/extraction permitted, power-up 3-State, power-up reset, multiplexed real-time and stored data, outputs sink 64mA and source 32mA, latch-up protection exceeds 500mA per JEDEC Std 17, 74ABTH16646 incorporates bus-hold data inputs which eliminate the need for external pull-up resistors to hold unused inputs, ESD protection exceeds 2000V per MIL STD 883 Method 3015 and 200V per Machine Model, and other features.

This data sheet provides detailed information about SN54ABT16543, SN74ABT16543 16-bit registered transceivers.

The 74ABT16543 is a 16-bit dual enable (3-State) latched transceiver from Philips Semiconductors. It has two sets of D-type latches for temporary storage of data flowing in either direction. The device supports hot insertion/extraction, power-up 3-State, and power-up reset. Multiple VCC and GND pins minimize switching noise. Back-to-back registers are used for storage. Separate controls for data flow in each direction are provided. The 74ABTH16543 incorporates bus-hold data inputs that eliminate the need for external pull-up resistors to hold unused inputs.

74ABT16543 16-Bit Registered Transceiver with 3-STATE Outputs is a 16-bit bidirectional data bus transceiver produced by American Fairchild Semiconductor Corporation. The chip adopts a 56-pin SSOP package, and has back-to-back registers, separate Latche Enable, Output Enable, A, B output pins, high impedance glitch-free bus loading and other features.

This document is a description document for 74ABT16543 16-Bit Registered Transceiver with 3-STATE Outputs, which is produced by Fairchild Semiconductor Corporation.

The 74ABT16541 and 74ABTH16541 are 16-bit buffers/line drivers with 3-State functionality, produced by Philips Semiconductors. The product has low static and dynamic power consumption, high speed and high output drive. Its output can absorb 64mA current and output 32mA current. The product has two options, 74ABT16541 does not have the bus hold feature, and 74ABTH16541 has the bus hold feature.