| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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58 pcs
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58 pcs | On Request | 1 | On Request | On Request | 00+14 | On Request | On Request |
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| Manufacturer Name | |
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| SVHC Present |
The HEF4049B from Philips is a hex inverting buffer integrated circuit. It provides six inverting buffers with high current output capability, making it suitable for driving TTL or high capacitive loads.
This buffer can also be used for logic level conversion, accepting input voltages up to 15V and converting them to standard TTL levels. The device offers guaranteed fan-out capabilities into common logic families, including standard TTL (2), 74LS (9), and 74L (16).
Key electrical characteristics include output sink and source currents that vary with supply voltage and temperature. Propagation delays for HIGH-to-LOW and LOW-to-HIGH transitions are also specified, with typical values ranging from 12 ns to 50 ns depending on supply voltage and load capacitance.
The HEF4049B is available in multiple package types, including 16-lead DIL (plastic and ceramic) and 16-lead SO packages. Its input protection circuit allows input voltages to exceed the supply voltage.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.20 | $1.20 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The HEF4049BP has a guaranteed fan-out of 2 standard TTL loads, 9 LS TTL loads, or 16 L TTL loads.
The typical propagation delay (HIGH to LOW) at VDD=5V and CL=50pF is 35 ns, with a maximum of 70 ns. For LOW to HIGH, typical is 50 ns, maximum 100 ns.
The HEF4049BP is available in 16-lead DIL (plastic), 16-lead DIL ceramic (cerdip), and 16-lead SO packages.
At VDD=15V, the output sink current is typically 20 mA, with a minimum of 1.5 mA at -40°C and a maximum of 16 mA at +85°C.
At VDD=5V, the output source current is typically 0.36 mA (at +85°C) with a minimum of 0.52 mA at -40°C.
At VDD=10V and CL=50pF, the maximum propagation delay is 30 ns for HIGH to LOW and 50 ns for LOW to HIGH.
At VDD=5V and CL=50pF, the typical output transition time is 20 ns (HIGH to LOW) and 60 ns (LOW to HIGH), with maximums of 40 ns and 120 ns respectively.
