The AC16244 and ACT16244 contain sixteen non-inverting buffers with 3-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus oriented transmitter/receiver. The device is nibble controlled. Each nibble has separate 3-STATE control inputs which can be shorted together for full 16-bit operation.
s Separate control logic for each byte and nibble s 16-bit version of the AC244/ACT244 s Outputs source/sink s ACT16244 has TTL-compatible inputs
Order Number 74ACT16244SSC 74ACT16244MTD Package Number MS48A MTD48 Package Description 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Pin Names OEn - 015 Description Output Enable Input (Active LOW) Inputs Outputs
The AC16244 and ACT16244 contain sixteen non-inverting buffers with 3-STATE standard outputs. The device is nibble (4 bits) controlled with each nibble functioning identically, but independent of the other. The control pins can be shorted together to obtain full 16-bit operation. The 3-STATE outputs are controlled by an Output Enable (OEn) input for each nibble. When OEn is LOW, the outputs are in 2-state mode. When OEn is HIGH, the outputs are in the high impedance mode, but this does not interfere with entering new data into the inputs.
Supply Voltage (VCC) DC Input Diode Current (IIK) VI = VCC 0.5V DC Output Diode Current (IOK) VO = VCC 0.5V DC Output Voltage (VO) DC Output Source/Sink Current (IO) DC VCC or Ground Current per Output Pin Junction Temperature Storage Temperature
Supply Voltage (VCC) AC ACT Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) Minimum Input Edge Rate (V/t) AC Devices VIN from to 70% VCC 4.5V, 5.5V Minimum Input Edge Rate (V/t) ACT Devices VIN from to 2.0V VCC 5.5V 125 mV/ns
Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation of FACT circuits outside databook specifications.
Symbol VIH Parameter Minimum HIGH Input Voltage VCC (V) 4.5 5.5 VIL Maximum LOW Input Voltage 4.5 5.5 VOH Minimum HIGH Output Voltage VOL Maximum LOW Output Voltage IOZ Maximum 3-STATE Leakage Current = +25°C Typ to +85°C Guaranteed Limits µA V IOL 12 mA IOL 24 mA IOL 24 mA (Note 2) VI (OE) = VIL, VIH VI = VCC, GND VO = VCC, GND IIN ICC IOLD IOHD Maximum Input Leakage Current (Note 3) Max Quiescent Supply Current (Note 3) Minimum Dynamic Output Current (Note VI = VCC, GND VIN = VCC or GND VOLD = 1.65V Max VOHD = 3.85V Min V IOUT µA V IOH -12 mA IOH -24 mA IOH -24 mA (Note 2) V IOUT µA V VOUT 0.1V or VCC 0.1V V Units Conditions VOUT 0.1V or VCC - 0.1V
Note 2: All outputs loaded; thresholds associated with output under test. Note 3: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC. Note 4: Maximum test duration 2.0 millisecond; one output loaded at a time.