TC74HC193AF(F) Toshiba

TC74HC193AP/AF TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74HC193AP, TC74HC193AF Synchronous Up/Down Binary Counter The TC74HC193A are high speed CMOS SYNCHRONOUS 2 TC74HC193AP 4-BIT UP/DOWN COUNTER fabricated with silicon gate C MOS technology. It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. They have a clear input (CLR), a load input ( LOAD ), load data inputs (A~D), two clock inputs (COUNT UP, COUNT DOWN), four count data outputs (QA~QD), and other outputs ( CARRY , BORROW ). CLEAR is active high and forces QA thru QD outputs low independent of the other inputs. TC74HC193AF CARRY and BORROW outputs are provided in order to make a cascade connection without external circuitry. All inputs are equipped with protection circuits against static discharge or transient excess voltage. Features High speed: f = 54 MHz (typ.) at V = 5 V max CC Low power dissipation: I = 4 A (max) at Ta = 25C CC High noise immunity: V = V = 28% V (min) NIH NIL CC Output drive capability: 10 LSTTL loads Weight DIP16-P-300-2.54A : 1.00 g (typ.) Symmetrical output impedance: I = I = 4 mA (min) OH OL SOP16-P-300-1.27A : 0.18 g (typ.) Balanced propagation delays: t t pLH pHL Wide operating voltage range: V (opr) = 2 to 6 V CC Pin and function compatible with 74LS193 Pin Assignment Start of commercial production 1986-05 1 2014-03-01 TC74HC193AP/AF IEC Logic Symbol Truth Table Inputs Function Count Count LOAD CLR Up Down H H L Count Up H H L No Count H H L Count Down H H L No Count X X L L Preset X X X H Reset Timing Chart 2 2014-03-01