Specification	SN74ALS688N

Current - Output High, Low [custom]	24 mA
Current - Output High, Low [custom]	2.6 mA
Max Propagation Delay @ V, Max CL	20 ns
Mounting Type	Through Hole
Number of Bits	8
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output	Active Low
Output Function	A=B
Package / Case	20-DIP
Package / Case	7.62 mm
Package / Case	0.3 in
Supplier Device Package	20-PDIP
Type	Identity Comparator
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74ALS688 Series

8-Bit Identity/Magnitude Comparators (P=Q) with Enable

Part	Output Function	Type	Operating Temperature [Max]	Number of Bits	Package / Case	Package / Case	Package / Case	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Max Propagation Delay @ V, Max CL	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Output	Mounting Type	Package / Case [y]	Package / Case [y]
Texas Instruments SN74ALS688NSR	A=B	Identity Comparator	70 °C	8	20-SOIC	0.209 "	5.3 mm	24 mA	2.6 mA	20 ns	4.5 V	5.5 V	20-SO	Active Low	Surface Mount
Texas Instruments SN74ALS688DWR	A=B	Identity Comparator	70 °C	8	20-SOIC			24 mA	2.6 mA	20 ns	4.5 V	5.5 V	20-SOIC	Active Low	Surface Mount	0.295 in	7.5 mm
Texas Instruments SN74ALS688N	A=B	Identity Comparator	70 °C	8	20-DIP	0.3 in	7.62 mm	24 mA	2.6 mA	20 ns	4.5 V	5.5 V	20-PDIP	Active Low	Through Hole
Texas Instruments SN74ALS688DW	A=B	Identity Comparator	70 °C	8	20-SOIC			24 mA	2.6 mA	20 ns	4.5 V	5.5 V	20-SOIC	Active Low	Surface Mount	0.295 in	7.5 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 7.86
		10	$ 5.43
		25	$ 4.81
		100	$ 4.11
		250	$ 3.87
Texas Instruments	TUBE	1	$ 6.56
		100	$ 5.35
		250	$ 4.20
		1000	$ 3.56

Description

General part information

SN74ALS688 Series

These identity comparators perform comparisons on two 8-bit binary or BCD words and provide P = Q\ outputs. These devices have totem-pole outputs.

The SN54ALS688 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS688 is characterized for operation from 0°C to 70°C.

These identity comparators perform comparisons on two 8-bit binary or BCD words and provide P = Q\ outputs. These devices have totem-pole outputs.

Documents

Technical documentation and resources

8-Bit Identity Comparators datasheet (Rev. A)

Data sheet