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Description: 1. The 74LS90 Shift Register IC (74169) is a 8-bit serial-in, parallel-out shift register from Texas Instruments' 74xx Low-Power Schottky series. 2. It can be used to transfer or store 8 data bits serially and output them in parallel. This makes it ideal for applications requiring bidirectional data transfer between synchronous and asynchronous systems. 3. Features TI's low-power Schottky technology, which reduces power consumption compared to the standard NAND version (7490). 4. Each of the eight register bits has an associated clock input (SRCLKi) and data input (SERi). 5. The parallel outputs of the 74169 are labeled Q0 through Q7. These outputs can be used as eight separate binary outputs or together to represent a single 8-bit word. 6. It has two control inputs: SRLR (Serially Register) and SRQE (Serial Rack Enable). SRLR enables the shift register, while SRQE synchronizes the output of one 74169 with another during data transfer between them. 7. The 74169's unique benefit
| Specification | Details |
|---|---|
| Manufacturer | Texas Instruments |
| Device Type | Analog Switch |
| Package Type | TSSOP-20 |
| Number of Channels | 4 |
| Channel Configuration | SPST (Single-Pole Single-Throw) |
| Operating Frequency | DC to 100 kHz |
| Control Voltage | VCC (5V or 10V) |
| Switching Time | ≤ 20 μs |
| Off-State Current | ≤ 1 μA |
| On-State Resistance | ≤ 150 Ω |
| Temperature Range | -40°C to 85°C |
| Power Dissipation | ≤ 5 mW (at VCC = 10V I _{SW} = 100 mA) |
| Storage Temperature | -65°C to 150°C |
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