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https://e2e.ti.com/support/logic-group/logic/f/logic-forum/574300/cd74hct137-cd74hct137-different-versions
以下版本之间有何区别？
CD74HCT137MT，
CD74HCT137MTE4
CD74HCT137MTG4
这是一个相当常见的问题：
SN74LVC32APWE4与SN74LVC32APWRG4CD74HC244M96部件标记解码器比较74AHC1.6244万DGGRE4和SN74HC1.6244万DGGRSN74LVC244ADBRE4与SN74LVC244ADBRG4比较74LVC1G126DBVRE4和SN74LVC1G126DBVR之间的差异SN74LVC1G04DBVR，SN74LVC1G04DBVRE4和SN74LVC1G04DBVRG4之间的差异
