HD74LS93

The HD74LS93 comtains four master-slave flip-flops and additional gating to provide a divide-by-two counter and three-state binary counter for divide-by-eight. The feature of HD74LS93 are as follows: (1)5-bit parallel-to-serial or serial-to-parallel converter; (2)asynchronous ones transfer preset entry; (3)buffered positive-triggered clock; (4)buffered active low clear.

The absolute maximum ratings of the HD74LS93 are: (1)supply voltage: 7.0V; (2)input voltage: -0.5 to +5.5V; (3)operating temperature range: -20 to +75; (4)storage temperature range: -65 to +150.

The following is about the electrical characteristics of HD74LS93:(1)input voltage: 2.0V min; (2)output voltage: 2.7V min at VCC=4.75, VIH=2V, VIL=0.8V, IOH=-400A and 0.4V max at VCC=4.75, VIH=2V, VIL=0.8V, IOL=4mA**; (3)input current any reset IIL: -0.4mA max at VCC=5.25V, VI=0.4V; (4)input current any reset IIH: 20A max at VCC=5.25V, VI=2.7V; (5)input current any reset II: 0.1mA max at VCC=5.25V, VI=7V; (6)short-circuit output current: -20mA min and -100mA max at VCC=5.25V; (7)supply current: 9mA typical and 15mA max at VCC=5.25V; (8)input clamp voltage: -1.5V max at VCC=4.75V, IIN=-18mA.