74188 32×8-Bit Bipolar PROM 5V 110mA IC DIP-16

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74188 32×8-Bit Bipolar PROM 5V 110mA IC DIP-16 The MH74188 is a bipolar electrically programmable PROM with a memory organization of 32 words × 8 bits, providing a total storage capacity of 256 bits. It uses five address inputs to select one of 32 memory words and provides eight data outputs for the stored information. The device is intended for applications requiring fixed data storage, code conversion, lookup tables, and programmable logic functions. The device includes address decoding, a memory-cell matrix, and output sensing circuitry. It provides separate address, chip-select, and data-output connections, with the stored information programmed into individual memory cells. The datasheet specifies TTL-compatible operating conditions and an IO-14 package. Features Bipolar electrically programmable ROM. 32-word × 8-bit memory organization. 256-bit total memory capacity. Five address inputs for word selection. Eight data outputs. Dedicated chip-select input. Suitable for storing constant digital information. Suitable for lookup-table and logic-function applications. TTL-compatible logic operation. Programmable memory contents. Through-hole DIP package. Specifications Parameter Specification Part Number MH74188 Memory Type Bipolar PROM Memory Organization 32 × 8 bits Total Memory Capacity 256 bits Address Inputs 5 Data Outputs 8 Chip Select Inputs 1 Logic Technology Bipolar TTL Package IO-14 / DIP-16 Recommended Supply Voltage 4.75 to 5.25 V Absolute Maximum Supply Voltage +7 V Input Voltage -0.5 to +5.5 V Output Voltage 0 to +5.5 V Operating Temperature 0 to +70 °C Storage Temperature -55 to +155 °C Maximum Low-Level Output Current 12 mA Maximum Supply Current, High Level 80 mA Maximum Supply Current, Low Level 110 mA Maximum Output High Current 100 µA Typical Output Capacitance 5.5 pF Maximum Address Selection Time 50 ns Maximum Output Enable/Disable Time 50 ns Pin Configuration Pin No. Symbol Function Description 1 – 7 Q 1 – Q 7 Data Outputs (Bits 1-7) 8 GND Ground (Negative Supply) 9 Q 8 Data Output (Bit 8) 10 A 1 Address Input 1 11 A 2 Address Input 2 12 A 3 Address Input 3 13 A 4 Address Input 4 14 A 5 Address Input 5 15 S (V) Selection / Enable Input (Active Low) 16 V CC Supply Voltage (+5V) Applications Constant Storage: Ideal for storing fixed data, lookup tables, and mathematical constants. Logic Function Generators: Can be programmed to replace complex combinational logic circuits. Address Decoding: Useful in microcomputer systems for memory mapping and peripheral selection. Package Content 1 x 74188 32×8-Bit Bipolar PROM 5V 110mA IC DIP-16. DataSheet MH74188