74HC688

8-bit magnitude comparator

The 74HC688 is an 8-bit magnitude comparator. It performs comparisons of two 8-bit binary or BCD words. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V_CC.

Features and benefits

Compare two 8-bit words
Wide supply voltage range from 2.0 to 6.0 V
CMOS input levels
Complies with JEDEC standard: no. 7A
ESD protection:
- HBM JESD22-A114-F exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	Nr of bits	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	Ψ_th(j-top) (K/W)	R_th(j-c) (K/W)	Package name
74HC688D	Production	2.0 - 6.0	CMOS	± 5.2	17	8	low	-40~125	82	24.3	58	SO20
74HC688PW	Production	2.0 - 6.0	CMOS	± 5.2	17	8	low	-40~125	98	4.0	42.3	TSSOP20

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74HC688D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_653	Active	74HC688D	74HC688D,653 ( 9337 139 00653 )
74HC688PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	HC688	74HC688PW,118 ( 9351 891 70118 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product	Status	Comments
74HC688D	933713900652	2021-12-31	2022-06-30	74HC688D
74HC688PW	935189170112	2021-12-31	2022-06-30	74HC688PW

Environmental information

Type number	Orderable part number	Chemical content	RoHS	RHF-indicator	Leadfree conversion date
74HC688D	74HC688D,653	74HC688D			week 30, 2004
74HC688PW	74HC688PW,118	74HC688PW			week 5, 2005

Quality and reliability disclaimer

Documentation (5)

File name	Title	Type	Date
74HC688	8-bit magnitude comparator	Data sheet	2021-07-16
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SOT360-1	plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm body	Package information	2022-06-21
SOT163-1	plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm body	Package information	2022-06-20
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08

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Ordering, pricing & availability

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