SN74LS651NT

The SN54LS253 consists of bus transceiver circuits, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers. The feature of SN54LS253 are as follows: (1)bus transceivers/registers; (2)independent registers and enables for A and B buses; (3)multiplexed real-time and stored data; (4)choice of true and inverting data paths; (5)choice of 3-state or open-collector outputs to A bus; (6)dependable taxas instruments quality and reliability.

The absolute maximum ratings of the SN54LS253 are: (1)Supply voltage, VCC: 7 V; (2)Input voltage, VI: 5.5 V; (3)operating free-air temperature range: -55°C to 125°C; (4)Storage temperature range: -65°C to 150°C.

The following is about the electrical characteristics of SN54LS253: (1)VIK: -1.5V max at VCC=min, II=-18mA; (2)VOH: 2.4V min and 3.4V typical at VCC=min, VIH=2V, VIL=max, IOH=max; (3)VOL: 0.25V typical and 0.4V max at VCC=min, VIH=2V, VIL=max; (4)IOZ: 20A max at VCC=max, VIH=2V; (5)II: 0.1mA max at VCC=max, VI=7V; (6)IIH: 20A at VCC=max, VI=2.7V.