74HC4538 Dual retriggerable precision monostable multivibrator
74HC4538A Dual Precision Monostable Multivibrator(Retiggerable, Resettable)
74HC4538D Dual retriggerable precision monostable multivibrator
74HC4538D-T Monostable Multivibrator
74HC4538DB Dual retriggerable precision monostable multivibrator
74HC4538N Dual retriggerable precision monostable multivibrator
74HC4538PW Dual retriggerable precision monostable multivibrator
74HC4538U Dual retriggerable precision monostable multivibrator