74LS1   데이터시트

Motorola => Freescale

BCD DECADE COUNTERS / 4-BIT BINARY COUNTERS

Motorola => Freescale

BCD DECADE/MODULO 16 BINARY SYNCHRONOUS BI-DIRECTIONAL COUNTERS

Motorola => Freescale

Retriggerable monostable multivibrator

Motorola => Freescale

1-of-10 decoder/driver open-collector

ON Semiconductor

PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER

Fairchild Semiconductor

Quad TRI-STATE® Buffer

Motorola => Freescale

BCD DECADE COUNTERS / 4-BIT BINARY COUNTERS

Hitachi -> Renesas Electronics

Hex/Quadruple D-type Flip-Flips(with clear)

Motorola => Freescale

QUAD 2-INPUT SCHMITT TRIGGER NAND GATE LOW POWER SCHOTTKY