摘要：74HC573D.652 74HC541J 74HC574D,653
浏览16次数 发布日期:2024-12-25
74HC4094PW/S400118 74HC4094PW118 74HC4094PWRE
74HC4094RM13TR 74HC4094T 74HC4096
74HC409D653 74HC40GGA 74HC40N
74HC4102N.L.A. 74HC4103B1 74HC42
74HC42-SMD 74HC42-SMD-R 74HC42/ROHS
74HC423 74HC423-SMD 74HC423/ROHS
74HC423A 74HC423AMX 74HC423AP
74HC423B1 74HC423BQ 115 74HC423BQ, 115
74HC423BQ,115 74HC423BQ115 74HC423D
74HC423D 653 74HC423D-T 74HC423D,652
74HC423D,653 74HC423D,653 - STANDARD MARKING - REEL P 74HC423D.652
74HC423D.653 74HC423D653 74HC423E
74HC423M 74HC423M1 74HC423N
74HC423N,652 74HC423SMD 74HC4252E
74HC4281 74HC42AP 74HC42B1R
74HC42D 74HC42D 74HC42D 652
74HC42D 653 74HC42D,652 74HC42D,653
74HC42D.652 74HC42E 74HC42EX
74HC42FPEL-E 74HC42N 74HC42N,652
74HC42N.652 74HC42S 74HC42T
74HC431 74HC4316 74HC4316
74HC4316-SMD 74HC4316/ROHS 74HC4316AD
74HC4316AN 74HC4316AP 74HC4316B1
74HC4316D 74HC4316D 74HC4316D 652
74HC4316D 653 74HC4316D-T 74HC4316D,652
74HC4316D,653 74HC4316D652 74HC4316D653
74HC4316DB 74HC4316DB,112 74HC4316DB,118
74HC4316DB118 74HC4316E 74HC4316M
74HC4316M1 74HC4316M1R 74HC4316M1TR
74HC4316M96 74HC4316MTC 74HC4316MX
74HC4316N 74HC4316N,652 74HC4316P
74HC4316PW 74HC4316PW 74HC4316PW 112
74HC4316PW,112 74HC4316PW,118 74HC4316PW.112
74HC4316PW118 74HC4316SMD 74HC4316SMT
74HC4316T 74HC4316WM 74HC4316WMX
74HC43216N 74HC432AM 74HC4351
74HC4351-SMD-R 74HC4351/ROHS 74HC4351D
74HC4351D 74HC4351D-T 74HC4351D,652
74HC4351D,653 74HC4351D/T 74HC4351D653
74HC4351DB 74HC4351DB 112 74HC4351DB,112
74HC4351DB,118 74HC4351DB.112 74HC4351DB.118
74HC4351DB118 74HC4351E 74HC4351M
74HC4351N 74HC4351N,652 74HC4351P
74HC4351SMD 74HC4352 74HC4352-SMD
74HC4352/ROHS 74HC4352D 74HC4352M
74HC4352M96 74HC4352N 74HC4353
74HC4353-SMD 74HC4353/ROHS 74HC4353D
74HC4353D,652 74HC4353D,653 74HC4353E
74HC4353N 74HC4353N,652 74HC4353NDIP20PHI
74HC4353T 74HC44 74HC440
74HC44316D 74HC44D 74HC451
74HC4510 74HC4510D 74HC4510E
74HC4511 74HC4511/ROHS 74HC4511A
74HC4511AP 74HC4511B1 74HC4511D
74HC4511D-T 74HC4511D,652 74HC4511D,653
74HC4511D.652 74HC4511D652 74HC4511D653
74HC4511E 74HC4511FP-E 74HC4511FPEL-E
74HC4511J 74HC4511M 74HC4511N
74HC4511N 74HC4511N,652 74HC4511P
74HC4511P-E 74HC4511SMD 74HC4514
74HC4514-SMD 74HC4514.6"" 74HC4514/300MIL/ROHS
74HC4514/600MIL/ROHS 74HC4514D 74HC4514D 652
74HC4514D 653 74HC4514D-T 74HC4514D,652
74HC4514D,653 74HC4514D.652 74HC4514D652
74HC4514D653 74HC4514DB 74HC4514DB,112
74HC4514DB,118 74HC4514DB.112 74HC4514DB118
74HC4514DBT 74HC4514DTR 74HC4514DW
74HC4514E 74HC4514L 74HC4514M
74HC4514M1TR 74HC4514MTC 74HC4514MTCX
74HC4514N 74HC4514N-R 74HC4514N,652
74HC4514N.652 74HC4514N652;10 74HC4514NDS
74HC4514P/ 74HC4514PW 74HC4514PW,112
74HC4514PW,118 74HC4514PW.112 74HC4514PW.118
74HC4514PW112 74HC4514PW118 74HC4514T
74HC4514WM 74HC4514WMX 74HC4515
74HC4515/300MIL 74HC4515/600MIL/ROHS 74HC4515B1R
74HC4515D 74HC4515D,652 74HC4515D,653
74HC4515D.652 74HC4515D652 74HC4515E
74HC4515EN 74HC4515L 74HC4515M
74HC4515N 74HC4515N 74HC4515N,652
74HC4515N3 74HC4515NT 74HC4515P
74HC4516 74HC4516D 74HC4516E
74HC4516N 74HC4518 74HC4518/ROHS
74HC4518AP 74HC4518E 74HC4518M1R
74HC4518N 74HC4518P 74HC4518P-E
74HC4518SMD 74HC451D 74HC451WM
74HC4520 74HC4520 74HC4520-SMD
74HC4520/ROHS 74HC4520AP 74HC4520B
74HC4520B1R 74HC4520D 74HC4520D
74HC4520D-Q100J 74HC4520D,112 74HC4520D,118
74HC4520D.112 74HC4520D/S400118 74HC4520D0014
74HC4520D112 74HC4520D118 74HC4520DB
74HC4520DB,112 74HC4520DB,118 74HC4520E
74HC4520EN 74HC4520FP-E 74HC4520M
74HC4520N 74HC4520N,652 74HC4520NDIP16PHI
74HC4520P 74HC4520P-E 74HC4520PW
74HC4520PW-Q100J 74HC4520PW,112 74HC4520PW,118
74HC4520SMD 74HC4520T 74HC453
74HC4532N 74HC4538 74HC4538-SMD
74HC4538/ROHS 74HC4538/SO 74HC45380
74HC4538A 74HC4538AD 74HC4538ADR2
74HC4538ADT 74HC4538AFN 74HC4538AFTOS93
74HC4538AN 74HC4538AP 74HC4538AP
74HC4538B1 74HC4538B1R 74HC4538BIR
74HC4538BT 74HC4538D 74HC4538D
74HC4538D - 74HC4538D 652 74HC4538D 653
74HC4538D-Q100 118 74HC4538D-Q100,118 74HC4538D-T
74HC4538D,652 74HC4538D,653 74HC4538D,653 - STANDARD MARKING - REEL
74HC4538D.652 74HC4538D(BJ) 74HC4538D/S206118
74HC4538D/S400118 74HC4538D/S420118 74HC4538D/T
74HC4538D652 74HC4538D653 74HC4538DB
74HC4538DB,112 74HC4538DB,118 74HC4538DB.112
74HC4538DC 74HC4538DS242 74HC4538DT
74HC4538E 74HC4538EHAR 74HC4538F
74HC4538FP-E 74HC4538J 74HC4538M
74HC4538M000455-03 74HC4538M1 74HC4538M1R
74HC4538M96 74HC4538N 74HC4538N
74HC4538N-ST 74HC4538N,652 74HC4538N.652
74HC4538N652;10 74HC4538NMOT91 74HC4538NN
74HC4538P 74HC4538P-E 74HC4538PW
74HC4538PW 118 74HC4538PW-Q100,11 74HC4538PW-Q100,118
74HC4538PW-Q100118 74HC4538PW,112 74HC4538PW,118
74HC4538PW.112 74HC4538PW/S400118 74HC4538PW112
74HC4538PW118 74HC4538RM13TR 74HC4538SMD
74HC4538T 74HC4538U/S400029 74HC4543
74HC4543-SMD 74HC4543/ROHS 74HC4543D
74HC4543E 74HC4543N 74HC4543P-E
74HC4543RM13TR 74HC4543T 74HC4570D-SMD
74HC4724 74HC4724N 74HC474DW
74HC47D 74HC4851A 74HC4851BQ 115
74HC4851BQ-Q100 115 74HC4851BQ-Q100,11 74HC4851BQ-Q100,115
74HC4851BQ,115 74HC4851BQ/C4X 74HC4851BQ115
74HC4851D 112 74HC4851D-Q100 118 74HC4851D-Q100,118
74HC4851D,112 74HC4851D,118 74HC4851PW
74HC4851PW-Q100 74HC4851PW-Q100 118 74HC4851PW-Q100,11
74HC4851PW-Q100,118 74HC4851PW,112 74HC4851PW,118
74HC4851PW/C4J 74HC4851PW118 74HC4851PWC
74HC4851RM13TR 74HC4851TTR 74HC4852ADR2G
74HC4852ADTR2G 74HC4852BQ 115 74HC4852BQ-Q100 115
74HC4852BQ-Q100,11 74HC4852BQ-Q100,115 74HC4852BQ-Q100115
74HC4852BQ,115 74HC4852BQ/C4 74HC4852D-Q100 118
74HC4852D-Q100,118 74HC4852D,112 74HC4852D,118
74HC4852PW 112 74HC4852PW-Q100 74HC4852PW-Q100,11
74HC4852PW-Q100,118 74HC4852PW,112 74HC4852PW,118
74HC4852PW.112 74HC4852PW/C1118 74HC4852PW/C4118
74HC4852PW/C4J 74HC4852PW/S400118 74HC4852PWC
74HC4852YRM13TR 74HC490 74HC490N
74HC4AN 74HC4N 74HC504
74HC5063D 74HC51 74HC51-SMD
74HC51/ROHS 74HC51A 74HC51AP
74HC51B1 74HC51D 74HC51FP-E
74HC51FPEL-E 74HC51J 74HC51N
74HC51N 74HC51RM 74HC51SMD
74HC521N 74HC533 74HC533-SMD
74HC533/ROHS 74HC533A 74HC533D
74HC533E 74HC533EX 74HC533FP-E
74HC533N 74HC533P-E 74HC533SMD
74HC533T 74HC534 74HC534-SMD
74HC534/ROHS 74HC534A 74HC534B1
74hc534d 74HC534D-T 74HC534E
74HC534EX 74HC534M 74HC534N
74HC534P-E 74HC534SMD 74HC534T
74HC537A 74HC537A 74HC538AD
74HC540 74HC540-R 74HC540-SMD
74HC540-SMD-R 74HC540(SMD) 74HC540/ROHS
74HC5400D 74HC540A 74HC540A/5.2
74HC540ADW 74HC540AN 74HC540AP
74HC540B1 74HC540D 74HC540D
74HC540D 653 74HC540D-Q100118 74HC540D-Q100J
74HC540D-T 74HC540D,652 74HC540D,653
74HC540D.652 74HC540D.653 74HC540D(BJ)
74HC540D/S242(B58345) 74HC540D653 74HC540DB
74HC540DB,112 74HC540DB,118 74HC540DB.112
74HC540DB112 74HC540DB118 74HC540DS242
74HC540DT 74HC540DTR2G 74HC540E
74HC540EX 74HC540J 74HC540M
74HC540M1 74HC540M1R 74HC540MJ
74HC540MTC 74HC540MTCX 74HC540N
74HC540N 74HC540N 74HC540N-Q100112
74HC540N-Q100U 74HC540N,652 74HC540NS
74HC540NT 74HC540P 74HC540PWR
74HC540SJ 74HC540SMD 74HC540T
74HC540WM 74HC541 74HC541
74HC541-SMD 74HC541-SMD-R 74HC541/ROHS
74HC5410 74HC541A 74HC541ADW
74HC541ADWR2 74HC541AFW 74HC541AFWD
74HC541AN 74HC541AP 74HC541APW
74HC541APWR 74HC541B1R 74HC541D
74HC541D 74HC541D 653 74HC541D-Q100118
74HC541D-Q100J 74HC541D-T 74HC541D,652
74HC541D,653 74HC541D.652 74HC541D.653
74HC541D(BJ) 74HC541D/DG118 74HC541D/S400118
74HC541D/T3 74HC541D/T3/INV 74HC541D652
74HC541D653 74HC541DB 74HC541DB,112
74HC541DB,118 74HC541DB.112 74HC541DIP
74HC541DT 74HC541DT/RWINNOV 74HC541DT3
74HC541DTR2G 74HC541DW 74HC541DWR
74HC541DWRTIS 74HC541E 74HC541EX
74HC541J 74HC541J(KERAMIK) 74HC541M
74HC541M1 74HC541M1R 74HC541MIK
74HC541MTC 74HC541MW 74HC541N
74HC541N 74HC541N-652 74HC541N,652
74HC541N.652 74HC541N652 74HC541P
74HC541PW 74HC541PW 118 74HC541PW PHILIPS
74HC541PW-Q100118 74HC541PW-Q100J 74HC541PW-T
74HC541PW,112 74HC541PW,118 74HC541PW.112
74HC541PW.118 74HC541PW/C4118 74HC541PW118
74HC541PWR 74HC541SMD 74HC541SSOP
74HC541T 74HC541WM 74HC5438N
74HC543D 74HC545D 74HC5517BCB
74HC5555D 74HC5555D 112 74HC5555D,112
74HC5555D,118 74HC5555D.112 74HC5555D112
74HC5555N 74HC5555N,112 74HC5555T
74HC56 74HC563 74HC563/ROHS
74HC563AP 74HC563B1 74HC563D
74HC563D, 653 74HC563D,652 74HC563D,653
74HC563E 74HC563FP-E 74HC563J(KERAMIK)
74HC563M 74HC563M1R 74HC563N
74HC563N 74HC563N,652 74HC563N.
74HC563N652;10 74HC563P 74HC563P-E
74HC563SMD 74HC564 74HC564/ROHS
74HC564A 74HC564ADW 74HC564AP
74HC564D 74HC564D,652 74HC564D,653
74HC564D653 74HC564E 74HC564FP-E
74HC564FPEL-E 74HC564M 74HC564N
74HC564N,652 74HC564P 74HC564P-E
74HC564SMD 74HC564T-SMD 74HC572A
74HC573 74HC573-SMD-R 74HC573-TSSOP
74HC573/FAIR][ 74HC573/PH][ 74HC573/ROHS
74HC5730 74HC5730018 74HC5730AA301
74HC5732WM 74HC573A 74HC573A
74HC573A SMD 74HC573A-SMD 74HC573AA
74HC573AD 74HC573ADM 74HC573ADTG
74HC573ADW 74HC573ADWG 74HC573ADWR
74HC573AFW 74HC573AN 74HC573AN-LG
74HC573AP 74HC573AP 74HC573APWR
74HC573ASMT 74HC573B1 74HC573BQ 115
74HC573BQ-G 74HC573BQ-Q100 115 74HC573BQ-Q100,115
74HC573BQ,115 74HC573BQ115 74HC573D
74HC573D 74HC573D 74HC573D 653
74HC573D-Q100 118 74HC573D-Q100,118 74HC573D-T
74HC573D,652 74HC573D,653 74HC573D.
74HC573D.652 74HC573D.653 74HC573D(BJ)
74HC573D/C4118 74HC573D/ROHS 74HC573D/S400118
74HC573D/T3 74HC573D/T3-PHI 74HC573D652
74HC573D653 74HC573DB 74HC573DB-Q100118
74HC573DB-Q100J 74HC573DB,112 74HC573DB,118
74HC573DB.112 74HC573DB118 74HC573DC
74HC573DIL20-40/85C 74HC573DMM74HC573WMX 74HC573DN
74HC573DS242 74HC573DT3 74HC573DTOS92
74HC573DW 74HC573DW ROHS 74HC573DW-ST
74HC573E 74HC573EX 74HC573GTSSOP20T/
74HC573LSOP20T/R 74HC573M 74HC573M000453-03
74HC573M1 74HC573M1R 74HC573M1T
74HC573MTC 74HC573MTCX 74HC573N
74HC573N 74HC573N-ST 74HC573N, 652
74HC573N,652 74HC573N.652 74HC573N652
74HC573N652M74HC573B1R 74HC573OCTALLATCH 74HC573PW
74HC573PW 118 74HC573PW------------- 74HC573PW-Q100,118
74HC573PW,112 74HC573PW,118 74HC573PW.112
74HC573PW.118 74HC573PW(P/B) 74HC573PW/AU118
74HC573PW/C1118 74HC573PW/C4118 74HC573PW112
74HC573PW118 74HC573PWC 74HC573PWR
74HC573S 74HC573SC 74HC573SM
74HC573SM20 74HC573SMD 74HC573T
74HC573T 74HC573TN 74HC573WM
74HC573WMX 74HC574 74HC574-SMD
74HC574-TI 74HC574(SMD) 74HC574/ROHS
74HC5740 74HC574A 74HC574AD
74HC574ADTR2 74HC574ADW 74HC574ADWR
74HC574AFW 74HC574AN 74HC574AP
74HC574ASMT 74HC574B 74HC574B1
74HC574BI 74HC574D 74HC574D
74HC574D 652 74HC574D 653 74HC574D-Q100 118
74HC574D-Q100,118 74HC574D-T 74HC574D-T
74HC574D,652 74HC574D,653 74HC574D,653
74HC574D,653 74HC574D.652 74HC574D.653
74HC574D(BJ) 74HC574D652 74HC574D653
74HC574DB 74HC574DB,112 74HC574DB,118
74HC574DB.112 74HC574DB118 74HC574DSIG93
74HC574DT 74HC574DTR2G 74HC574DTR2G
74HC574DW 74HC574DWR 74HC574E
74HC574EX 74HC574FPEL-E 74HC574M
74HC574M1 74HC574M1R 74HC574N
74HC574N 74HC574N-C6345ME 74HC574N,652
74HC574N.652 74HC574NDIP20 74HC574PW
74HC574PW 118 74HC574PW-Q100,118 74HC574PW-Q100118
74HC574PW-T 74HC574PW,112 74HC574PW,118
74HC574PW.112 74HC574PW/C1118 74HC574PW118
74HC574PWR 74HC574SJ 74HC574SMD
74HC574SSOP 74HC574T 74HC574TW
74HC574WM 74HC574WMX 74HC578N
74HC579N 74HC57AN 74HC57N
74HC58 74HC583 74HC585D
74HC588WM 74HC589 74HC589
74HC589-SMD 74HC589/MOT 74HC589A
74HC589AD 74HC589ADR2G 74HC589ADTR2
74HC589ADTR2G 74HC589AN 74HC589AN/ROHS
74HC589M 74HC589N 74HC589SMD
74HC58D 74HC58D-T 74HC58D,652
74HC58D,653 74HC58D653 74HC58DB,112
74HC58DB,118 74HC58DB118 74HC58DT
74HC58J 74HC58N 74HC58N,652
74HC58N652 74HC58SMD 74HC590
74HC590-SMD-R 74HC590/ROHS 74HC590A
74HC590AD 74HC590ADR 74HC590ADW
74HC590AF 74HC590AM 74HC590AN
74HC590AP 74HC590AP 74HC590AW
74HC590B1 74HC590B1R 74HC590BQ
74HC590BQ 115 74HC590BQ,115 74HC590D,112
74HC590D,118 74HC590D.112 74HC590D112
74HC590D118 74HC590M 74HC590N
74HC590N,112 74HC590N112 74HC590P
74HC590PW 74HC590PW,112 74HC590PW,118
74HC590PW/C1118 74HC590PW/C4J 74HC590PW118
74HC590RM13TR 74HC590SMD 74HC592
74HC592A 74HC592AF 74HC592AM
74HC592AP 74HC592FPEL-E 74HC593AF
74HC593AP 74HC593N.L.A. 74HC594
74HC594/ROHS 74HC594A 74HC594D
74HC594D 118 74HC594D-Q100 118 74HC594D-Q100,118
74HC594D,112 74HC594D,118 74HC594D,118 SO16
74HC594D(BJ) 74HC594D/S400 74HC594D/S400118
74HC594D112 74HC594D118 74HC594D118SO16
74HC594DB 74HC594DB,112 74HC594DB,118
74HC594DB/S400 74HC594DB/S400118 74HC594DB112
74HC594DB118 74HC594DIL 74HC594DW
74HC594DWR 74HC594N 74HC594N,112
74HC594PW-Q100J 74HC594S16-13 74HC594SMD
74HC594T16-13 74HC594WM 74HC595
74HC595 74HC595-R 74HC595-SMD
74HC595-SMD-R 74HC595.. 74HC595/ROHS
74HC5950 74HC5958B1R 74HC5958BITSHIFT
74HC595A 74HC595AD 74HC595ADR2
74HC595ADT 74HC595ADTR 74HC595ADTR2G
74HC595AF 74HC595AFN 74HC595AG
74HC595AN 74HC595AP 74HC595AP
74HC595ASMD 74HC595ATR26 74HC595B1
74HC595B1DIP16 74HC595B1R 74HC595BI
74HC595BQ 74HC595BQ 115 74HC595BQ-Q100
74HC595BQ-Q100 115 74HC595BQ-Q100,115 74HC595BQ,115
74HC595BQ/C4X 74HC595BQ+115 74HC595BQ115
74HC595BQR 74HC595D 74HC595D
74HC595D 112 74HC595D 118 74HC595D 3.9MM
74HC595D-Q100 118 74HC595D-Q100,118 74HC595D-Q100118
74HC595D-T 74HC595D,112 74HC595D,118
74HC595D,118 - STANDARD MARKING * REEL P 74HC595D.112 74HC595D.118
74HC595D.653 74HC595D(118) 74HC595D(BJ)
74HC595D(CU) 74HC595D/AU118 74HC595D/S200118
74HC595D112 74HC595D118 74HC595DB
74HC595DB-Q100J 74HC595DB-T 74HC595DB,112
74HC595DB,118 74HC595DB.112 74HC595DB118
74HC595DCU 74HC595DE4 74HC595DF
74HC595DG 74HC595DR-NXP 74HC595DR/TI/ROHS
74HC595DR2G 74HC595DR2G 74HC595DRG4
74HC595DS242 74HC595DT 74HC595DTR2G
74HC595DW 74HC595DWR 74HC595GS
74HC595M 74HC595M1 74HC595M1
74HC595MM 74HC595MTC 74HC595MX
74HC595N 74HC595N 74HC595N
74HC595N-LF 74HC595N-NSC 74HC595N-PHI
74HC595N-PHILIPS95 74HC595N-SIG93 74HC595N-TI
74HC595N,112 74HC595N,112 74HC595PW
74HC595PW 112 74HC595PW 118 74HC595PW-Q100
74HC595PW-Q100,118 74HC595PW-T 74HC595PW,112
74HC595PW,118 74HC595PW,118 - STANDARD MARKING * REEL 74HC595PW.118
74HC595PW/AU118 74HC595PW/C1118 74HC595PW/C4118
74HC595PW/C4J 74HC595PW+118 74HC595PW112
74HC595PW118 74HC595S16-13 74HC595S16-13
74HC595SM 74HC595SMD 74HC595T16-13
74HC595T16-13 74HC595TTR 74HC595WMX
74HC595WMX-T-R 74HC597 74HC597-SMD
74HC597. 74HC597/ROHS 74HC597A
74HC597ADR2G 74HC597AN 74HC597AP
74HC597D 74HC597D 652 74HC597D 653
74HC597D-Q100118 74HC597D-Q100J 74HC597D-T
74HC597D,652 74HC597D,653 74HC597D.652
74HC597D(SOIC-16) 74HC597D/AU118 74HC597D652
74HC597D653 74HC597DB 74HC597DB,112
74HC597DB,118 74HC597DB.112 74HC597E
74HC597FPEL-E 74HC597M 74HC597M1R
74HC597MX 74HC597N 74HC597N
74HC597N,652 74HC597N.652 74HC597N652;10
74HC597P 74HC597P-E 74HC597PW
74HC597PW-NIROHS 74HC597PW-Q100J 74HC597PW,112
74HC597PW,118 74HC597PW.112 74HC597PW112
74HC597PW118 74HC597RM13TR 74HC597SMD
74HC597T 74HC598 74HC59AD
74HC59DR 74HC5DR 74HC60
74HC604 74HC60DC 74HC620
74HC620AP 74HC620P 74HC620SMD
74HC623 74HC623N 74HC623SMD
74HC630-(630-720-MARKED) 74HC6323AD 74HC6323AD 112
74HC6323AD 118 74HC6323AD-T 74HC6323AD,112
74HC6323AD,118 74HC6323AD.112 74HC6323AD.118
74HC640 74HC640-SMD 74HC640/ROHS
74HC640AN 74HC640AP 74HC640D
74HC640D,652 74HC640D,653 74HC640DB
74HC640DB,112 74HC640DB,118 74HC640DB118
74HC640DW 74HC640E 74HC640M