SN54ALS109A, SN54AS109A, SN74ALS109A, SN74AS109A DUAL J-WITH CLEAR AND PRESET

SDAS198B - APRIL 1982 - REVISED AUGUST 1995

features

• Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

description

These devices contain two independent J-K\ positive-edge-triggeredflip-flops. A low level at the preset () or clear () inputs sets or resets the outputsregardless of the levels of the other inputs. When and are inactive (high), data at the Jand K\ inputs meeting the setup-time requirements are transferred tothe outputs on the positive-going edge of the clock (CLK) pulse.Clock triggering occurs at a voltage level and is not directlyrelated to the rise time of the clock pulse. Following the hold-timeinterval, data at the J and K\ inputs can be changed withoutaffecting the levels at the outputs. These versatile flip-flops canperform as toggle flip-flops by grounding K\ and tying J high. Theyalso can perform as D-type flip-flops if J and K\ are tied together.

The SN54ALS109A and SN54AS109A are characterized for operationover the full military temperature range of -55°C to 125°C.The SN74ALS109A and SN74AS109A are characterized for operation from0°C to 70°C.

View more information about generic part numbers:SN54ALS109A, SN74ALS109A, SN74AS109A

Go to the Engineering Design Center to locate information on other TI Semiconductor devices.

(c) Copyright 1998 Texas Instruments Incorporated. All rights reserved.
Trademarks, Important Notice!