TC74HC193AP/AF
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74HC193AP, TC74HC193AF
Synchronous Up/Down Binary Counter
The TC74HC193A are high speed CMOS SYNCHRONOUS
4-BIT UP/DOWN COUNTER fabricated with silicon gate C2MOS
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.
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.
TC74HC193AP
TC74HC193AF
Features
•
High speed: fmax = 54 MHz (typ.) at VCC = 5 V
•
Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
•
High noise immunity: VNIH = VNIL = 28% VCC (min)
•
Output drive capability: 10 LSTTL loads
•
•
Symmetrical output impedance: |IOH| = IOL = 4 mA (min)
∼
Balanced propagation delays: tpLH − tpHL
•
Wide operating voltage range: VCC (opr) = 2 to 6 V
•
Pin and function compatible with 74LS193
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
Pin Assignment
Start of commercial production
1986-05
1
2014-03-01
