Elec-component
SN74LS189N
SN74LS189N

 

SN74LS189N

Utsource Holding Company Limited flag
Kategorya: Elec-component Magagamit (Jml:9999999)
Para sa karagdagang impormasyon, bisitahin ang aming opisyal na website sa utsource.us
Bisitahin ang Opisyal na Website Makipag-ugnayan sa amin
Deskripsyon

BUY SN74LS189N https://www.utsource.net/itm/p/1151937.html
64-Bit Random Access Memory with 3-State Outputs

Below is the parameter table and instructions for the SN74LS189N 4-Bit Static RAM (Random Access Memory).

SN74LS189N Parameter Table

Parameter Symbol Min Typ Max Unit Conditions
Supply Voltage VCC 4.75 5.0 5.25 V
Output High Level Voltage VOH 2.4 - 3.4 V IOL = 0.4 mA
Output Low Level Voltage VOL 0.0 - 0.5 V IOL = 8.0 mA
Input High Level Voltage VIH 2.0 - 5.0 V
Input Low Level Voltage VIL 0.0 - 0.8 V
Storage Temperature Tstg -65 - 150 °C
Operating Temperature TA 0 - 70 °C
Access Time tAA 0 45 70 ns VCC = 5V, TA = 25°C
Write Cycle Time tWC 0 150 200 ns VCC = 5V, TA = 25°C
Address Setup Time tAS 0 25 45 ns VCC = 5V, TA = 25°C
Address Hold Time tAH 0 10 20 ns VCC = 5V, TA = 25°C
Data Setup Time tDS 0 25 45 ns VCC = 5V, TA = 25°C
Data Hold Time tDH 0 10 20 ns VCC = 5V, TA = 25°C
Chip Enable Setup Time tCS 0 25 45 ns VCC = 5V, TA = 25°C
Chip Enable Hold Time tCH 0 10 20 ns VCC = 5V, TA = 25°C
Output Enable Setup Time tOS 0 25 45 ns VCC = 5V, TA = 25°C
Output Enable Hold Time tOH 0 10 20 ns VCC = 5V, TA = 25°C

Instructions for SN74LS189N

  1. Power Supply:

    • Connect VCC to +5V and GND to ground.

  2. Address Inputs:

    • A0, A1, A2, and A3 are the address lines. They select one of the 16 memory locations.
    • Ensure that the address lines are stable before the access time (tAA).

  3. Data Inputs/Outputs:

    • D0, D1, D2, and D3 are the data lines. They are used for both reading from and writing to the memory.
    • During a write operation, the data lines should be stable during the write cycle time (tWC).
    • During a read operation, the data lines will reflect the contents of the selected memory location after the access time (tAA).

  4. Control Signals:

    • Chip Enable (CE): When CE is low, the chip is enabled. When high, the chip is disabled.
    • Write Enable (WE): When WE is low, a write operation is performed. When high, a read operation is performed.
    • Output Enable (OE): When OE is low, the outputs are enabled. When high, the outputs are in a high-impedance state.

  5. Timing Considerations:

    • Ensure that all setup and hold times are met to avoid data corruption.
    • The access time (tAA) is the time it takes for the data to become valid after the address and control signals are stable.
    • The write cycle time (tWC) is the minimum time required for a complete write operation.

  6. Storage and Operating Conditions:

    • Store the device within the storage temperature range (-65°C to 150°C).
    • Operate the device within the operating temperature range (0°C to 70°C) for reliable performance.

By following these parameters and instructions, you can ensure proper operation of the SN74LS189N 4-Bit Static RAM.

(For reference only)

Tingnan ang karagdagang mga detalye tungkol sa Utsource Holding Company Limited
Utsource Holding Company Limited
Utsource Holding Company Limited Electronic Component Wholesaler, IC Chip Distributor, IGBT Module Supplier in California, USA | Utsource Holding Company Limited
Makipag-ugnayan sa amin flag