DM7474 Datasheet | National Semiconductor

Description This device contains two independent positive-edge-triggered D flip-flops with plementary outputs The information on the D input is accepted by the flip-flops on the positive going edge of the clock pulse The triggering occurs at a voltage level and is not directly related to the transition time of the rising edge of the clock The data on the D input may be changed while the clock is low or high without affecting the outputs as long as the data setup and hold times are not violated A low logic level on the preset or clear inputs will set or reset the outputs regardless of the logic levels of the other inputs Features Y Alternate Military Aerospace device (5474) is available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package TL F 6526 - 1 Order Number 5474DMQB 5474FMQB DM5474J DM5474W DM7474M or DM7474N See NS Package Number J14A M14A N14A or W14B Function Table Inputs Outputs PR CLR CLK D X XH L X XL H H H u HH L H H u LL H L X Q0 Q0 H e High Logic Level X e Either Low or High Logic Level L e Low Logic Level u e Positive-going transition of the clock e This configuration is nonstable that is it will not persist when either the preset and or clear inputs return to their inactive (high) level Q0 e The output logic level of Q before the indicated input conditions were established C1995 National Semiconductor Corporation TL F 6526 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage 7V Input Voltage 5 5V Operating Free Air Temperature Range DM54 and 54 b55 C to a125 C DM74 0 C to a70 C Storage Temperature Range b65 C to a150...