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Technical Specifications
Parameters and characteristics for this part
| Specification | SN74LS629D |
|---|---|
| Current - Supply | 35 mA |
| Frequency | 20 MHz |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Package / Case | 16-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 16-SOIC |
| Type | VCO (Dual) |
| Voltage - Supply [Max] | 5.25 V |
| Voltage - Supply [Min] | 4.75 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 6.40 | |
| 10 | $ 5.75 | |||
| 40 | $ 5.44 | |||
| 120 | $ 4.71 | |||
| 280 | $ 4.47 | |||
| 520 | $ 4.01 | |||
| 1000 | $ 3.38 | |||
| 2520 | $ 3.21 | |||
| Texas Instruments | TUBE | 1 | $ 5.06 | |
| 100 | $ 4.13 | |||
| 250 | $ 3.24 | |||
| 1000 | $ 2.75 | |||
Description
General part information
SN74LS629 Series
These voltage-controlled oscillators (VCOs) are improved versions of the original VCO family: SN54LS124, SN54LS324 thru SN54LS327, SN74LS124, and SN74LS324 thru SN74LS327. These new devices feature improved voltage-to-frequency linearity, range, and compensation. With the exception of the 'LS624 and 'LS628, all of these devices feature two independent VCOs in a single monolithic chip. The 'LS624, 'LS625, 'LS626, and 'LS628 have complementary Z outputs. The output frequency for each VCO is established by a single external component (either a capacitor or crystal) in combination with voltage-sensitive inputs used for frequency control and frequency range. Each device has a voltage-sensitive input for frequency control; however, the 'LS624, 'LS628, and 'LS629 devices also have one for frequency range. (See Figures 1 thru 6).
The 'LS628 offers more precise temperature compensation than its 'LS624 counterpart. The 'LS624 features a 600 ohm internal timing resistor. The 'LS628 requires a timing resistor to be connected externally across Rextpins. Temperature compensation will be improved due to the temperature coefficient of the external resistor.
Figure 3 and Figure 6 contain the necessary information to choose the proper capacitor value to obtain the desired operating frequency.
Documents
Technical documentation and resources
