 | SN74LS93D | 240 | Texas Instruments | 19+ | 14-SOIC（0.154"，3.90mm 宽） | ￥2.7900 | IC 4-BIT BINARY COUNTER 14-SOIC | 购买 |
| SN74ALS191AN | 115 | Texas Instruments | 19+ | 16-DIP（0.300"，7.62mm） | ￥2.9400 | IC SYNC UP/DOWN BIN CNTR 16-DIP | 购买 |
| SN74LS697N | 82 | Texas Instruments | 19+ | 20-DIP（0.300"，7.62mm） | ￥6.6300 | IC SYNC UP/DN BINARY CNTR 20-DIP | 购买 |
| SN74AS867NT | 47 | Texas Instruments | 19+ | 24-DIP（0.300"，7.62mm） | ￥11.3300 | IC SYNC UP/DOWN COUNTER 24-DIP | 购买 |
| HEF4017BP,652 | 1384 | NXP Semiconductors | 19+ | 16-DIP（0.300"，7.62mm） | ￥1.2500 | IC COUNTER 5STAGE JOHNSON 16DIP | 购买 |
| 74HCT393N,652 | 1664 | NXP Semiconductors | 19+ | 14-DIP（0.300"，7.62mm） | ￥1.2700 | IC COUNTER DUAL 4BIT BIN 14DIP | 购买 |
| 74HCT4017D,653 | 2500 | NXP Semiconductors | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.2961 | IC JOHNSON DECADE COUNTER 16SOIC | 购买 |
| 74HCT4017D,653 | 2500 | NXP Semiconductors | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥0.2961 | IC JOHNSON DECADE COUNTER 16SOIC | 购买 |
| 74HC4017N,652 | 1684 | NXP Semiconductors | 19+ | 16-DIP（0.300"，7.62mm） | ￥1.6700 | IC COUNTER 5STAGE JOHNSON 16DIP | 购买 |
| 74HC4024N,652 | 1813 | NXP Semiconductors | 19+ | 14-DIP（0.300"，7.62mm） | ￥1.5500 | IC COUNTER 7STAGE BINARY 14DIP | 购买 |
| 74HCT4020PW,112 | 1 | NXP Semiconductors | 19+ | 16-TSSOP（0.173"，4.40mm 宽） | ￥0.8000 | IC 14STAGE BINARY RIPPLE 16TSSOP | 购买 |
| 74HCT390DB,112 | 601 | NXP Semiconductors | 19+ | 16-SSOP（0.209"，5.30mm 宽） | ￥0.9300 | IC DUAL DEC RIPPLE COUNT 16-SSOP | 购买 |
| HEF4521BP,652 | 320 | NXP Semiconductors | 19+ | 16-DIP（0.300"，7.62mm） | ￥2.1000 | IC FREQ DIVIDER 24STG 16DIP | 购买 |
| 74LV4020D,112 | 759 | NXP Semiconductors | 19+ | 16-SOIC（0.154"，3.90mm 宽） | ￥1.3000 | IC 14BIT BINARY RIPPLE 16-SOIC | 购买 |
| 74HC4059N,112 | 374 | NXP Semiconductors | 19+ | 24-DIP（0.600"，15.24mm） | ￥5.1000 | IC PROG DIV-BY-N COUNTER 24-DIP | 购买 |
| SY100EL33ZG | 129 | Micrel Inc | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥3.1100 | IC DIVIDER /4 5V/3.3V 8-SOIC | 购买 |
| SY10EL32VZG | 92 | Micrel Inc | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥4.1300 | IC DIVIDER /2 5V/3.3V 8-SOIC | 购买 |
| SY100E137JZ | 27 | Micrel Inc | 19+ | 28-LCC（J 形引线） | ￥6.7900 | IC COUNTER RIPPLE 8BIT 28-PLCC | 购买 |
| SN74HC393DR | 2500 | Texas Instruments | 19+ | 14-SOIC（0.154"，3.90mm 宽） | ￥0.1550 | IC DUAL 4BIT BINRY COUNTR 14SOIC | 购买 |
| SN74HC393NSR | 2000 | Texas Instruments | 19+ | 14-SOIC（0.209"，5.30mm 宽） | ￥0.1705 | IC COUNTER BIN 4BIT DUAL 14SOP | 购买 |
