Siemens SAB8286A 8-Bit Bi-Directional Microprocessor Driver +5V 90mA DIP-20

Description

Siemens SAB8286A 8-Bit Bi-Directional Microprocessor Driver +5V 90mA DIP-20 The SAB 8286A is an 8-bit bipolar octal bus transceiver with high-impedance 3-state outputs, designed by Siemens using their Advanced Standard Buried Collector (ASBC) fast bipolar process. It serves as a non-inverting data bus buffer and driver engineered to interface local processor data buses directly with system data buses in high-demand microcomputer environments. Features Fully Parallel 8-Bit Transceiver Architecture 3-State High-Impedance Outputs for Bus Sharing 40% Less Power Supply Current than Standard SAB 8286 High Output Drive Capability for Driving System Data Buses No Output Low Noise/Glitching during 3-State Transitions Fully Backward Compatible with Standard SAB 8286 / SAB 8287 Fabricated in Fast Bipolar ASBC Process Standard 20-Pin Plastic Dual In-Line Package (DIP-20) Specifications Parameter Symbol Min Max Unit Test Condition / Notes Supply Voltage V CC 4.5 5.5 V +5V ±10% Operating Range Power Supply Current I CC — 90 mA All outputs open Power Dissipation P D — 1.0 W Absolute Maximum Rating Operating Temperature Range T A 0 +70 °C Temperature Under Bias Storage Temperature T STG -65 +150 °C Absolute Maximum Rating Output LOW Voltage (B Outputs) V OL(B) — 0.45 V I OL = 32 mA Output LOW Voltage (A Outputs) V OL(A) — 0.45 V I OL = 16 mA Output HIGH Voltage (B Outputs) V OH(B) 2.4 — V I OH = -5 mA Output HIGH Voltage (A Outputs) V OH(A) 2.4 — V I OH = -1 mA Input LOW Voltage (A Side) V IL(A) — 0.8 V V CC = 5.0V Input LOW Voltage (B Side) V IL(B) — 0.9 V V CC = 5.0V Input HIGH Voltage V IH 2.0 — V V CC = 5.0V Input Capacitance C IN — 12 pF F = 1 MHz, V BIAS = 2.5V, T A = 25°C Input to Output Delay (Non-Inverting) t IVOV 5 30 ns A to B or B to A propagation delay Output Enable Time t ELOV 10 30 ns OE active LOW to valid output Output Disable Time t EHOZ 5 18 ns OE inactive HIGH to 3-state Pin Definitions & Functions (20-Pin DIP) Pin No. Symbol Type Function 1 – 8 A 0 – A 7 I/O Local Bus Data Pins: Interface with the processor local bus depending on the state of control pin T. 9 OE Input Output Enable (Active LOW): Enables output drivers onto their respective bus. HIGH puts outputs into high-impedance state. 10 GND Power Ground: 0V reference. 11 T Input Transmit Control Signal: Controls data direction. HIGH: A → B. LOW: B → A. 12 – 19 B 7 – B 0 I/O System Bus Data Pins: Interface with system bus lines (Non-Inverting). Pin 12 = B7 … Pin 19 = B0. 20 V CC Power Power Supply: +5V power connection. Functional Logic / Operational Mode Output Enable (OE) Transmit (T) Data Direction / Operation LOW HIGH Data at local bus (A 0 –A 7 ) is driven onto system bus (B 0 –B 7 ) LOW LOW Data at system bus (B 0 –B 7 ) is driven onto local bus (A 0 –A 7 ) HIGH X (Don’t Care) Outputs in High Impedance (3-State Isolation) Applications Microcomputer system data bus expansion and isolation Bidirectional interface between local processor data buses and main memory/peripheral buses Legacy computer maintenance, repair, and retrocomputing development High-capacitance bus drive systems needing low power dissipation Package Content 1 x Siemens SAB8286A 8-Bit Bi-Directional Microprocessor Driver +5V 90mA DIP-20 DataSheet sab8286

From the supplier's page.