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N74F269D Datasheet(PDF) 8 Page - NXP Semiconductors |
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N74F269D Datasheet(HTML) 8 Page - NXP Semiconductors |
8 / 14 page Philips Semiconductors Product specification 74F269 8–bit bidirectional binary counter 1996 Jan 05 8 AC WAVEFORMS For all waveforms, VM = 1.5V. The shaded areas indicate when the input is permitted to change for predictable output performance. tPHL VM tPHL VM VM VM 1/fMAX tW(L) CP Qn tW(H) VM VM tPLH tPLH VM TC SF00791A Waveform 1. Propagation Delay, Clock Input to Output, Clock Pulse Width, and Maximum Clock Frequency VM VM VM VM tPLH tPHL CET TC SF00792 Waveform 2. Propagation Delay, CET Input to Terminal Count Output VM VM VM tPLH tPHL VM U/D TC SF00793 Waveform 3. Propagation Delay, Up/Down Count Control Input to Terminal Count Output CP VM VM VM VM VM VM ts ts(L) ts(H) th = 0 th = 0 Pn PE SF00844 VM VM th Waveform 4. Parallel Data and Parallel Enable Setup and Hold Times CP Qn VM VM VM VM th(L) th(H) CET CEP ts(H) ts(L) COUNT NO CHANGE SF00842 VM VM Waveform 5. Count Enables Setup and Hold Times CP VM VM VM VM ts(H) th th ts(L) COUNT UP COUNT DOWN U/D Qn SF00839 VM VM Waveform 6. Up/Down Count Control Setup and Hold Times |
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