SN54LS26
QUAD 2-INPUT NAND BUFFER (Motorola Inc)
SN54LS26
High-Voltage Interface Positive-NAND Gates (Texas Instruments)
SN54LS20
DUAL 4-INPUT NAND GATE (Motorola Inc)
SN54LS20
Dual 4-Input Positive-NAND Gate (Texas Instruments)
SN54LS21
DUAL 4-INPUT AND GATE (Motorola Inc)
SN54LS21
DUAL 4-INPUT POSITIVE-AND GATE (Texas Instruments)
SN54LS22
DUAL 4-INPUT NAND GATE (Motorola Inc)
SN54LS221
DUAL MONOSTABLE MULTIVIBRATORS (Motorola Inc)
SN54LS221
DUAL MONOSTABLE MULTIVIBRATORS (Texas Instruments)
SN54LS240
OCTAL BUFFER/LINE DRIVER (Motorola Inc)