74HC688D

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.

Orderable parts

Type number	Orderable part number	Ordering code (12NC)	Package	Buy from distributors
74HC688D	74HC688D,653	933713900653	SOT163-1	Order product
74HC688D	74HC688D,652	933713900652	SOT163-1	Order product

8-bit magnitude comparator

Buy from Nexperia

SKU	Stock*	MOQ	Price per unit**	Quantity

Buy from distributors

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

* Stock values are subject to change
** Displayed price per unit is based on small quantity orders
*** Authorized resellers for overstock, mature, and discontinued products which are warranted for reliability by the reseller, no longer by Nexperia

Features

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

Target applications

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	No of bits	Power dissipation considerations	T_amb (Cel)	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

Package

Type number	Orderable part number, (Ordering code (12NC))	Status	Marking	Package	Outline version	Reflow-/Wave soldering	Packing
74HC688D	74HC688D,653 ( 9337 139 00653 )	Active	74HC688D	SO20 (SOT163-1)	SOT163-1		Reel 13" Q1/T1 CECC
74HC688D	74HC688D,652 ( 9337 139 00652 )	Active	74HC688D	SO20 (SOT163-1)	SOT163-1		Bulk Pack, CECC

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	RoHS / RHF	Leadfree conversion date	EFR	IFR	MTBF (hour)	MSL	MSL leadfree
74HC688D	74HC688D,653	74HC688D		week 30, 2004	84.9	6.62	1.51E8	1	1
74HC688D	74HC688D,652	74HC688D		week 30, 2004	84.9	6.62	1.51E8	1	1

Quality and reliability disclaimer

Series

74HC(T)688 - 8-bit magnitude comparator

Documentation (5)

File name	Title	Type	Date
74HC688	8-bit magnitude comparator	Data sheet	2018-07-04
AN11044	Pin FMEA 74HC/74HCT family	Application note	2019-01-09
D12_PC_sch_ver2_0	-	Design support	1998-04-22
HCT_USER_GUIDE	HC/T User Guide	User manual	1997-10-31
SOT163-1	plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm body	Outline drawing	2018-10-18

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Models

File name	Title	Type	Date
D12_PC_sch_ver2_0	-	Design support	1998-04-22

Ordering, pricing & availability

Type number	Orderable part number	Ordering code (12NC)	Packing	Buy online
74HC688D	74HC688D,653	933713900653	Reel 13" Q1/T1 CECC	Order product
74HC688D	74HC688D,652	933713900652	Bulk Pack, CECC	Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.