SCLS352I July 1997 – January 2025 SN54AHC123A , SN74AHC123A
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The ’AHC123A devices are dual retriggerable monostable multivibrators designed for 2V to 5.5V VCC operation.
PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) | BODY SIZE (NOM)(3) |
---|---|---|---|
SNx4AHC123A | DB (SSOP, 16) | 6.50mm x 7.8mm | 6.50mm x 5.30mm |
PW (TSSOP, 16) | 5.00mm x 6.4mm | 5.00mm x 4.40mm | |
DGV (TVSOP, 16) | 3.60mm x 6.4mm | 3.60mm x 4.40mm | |
N (PDIP, 16) | 19.3mm x 9.4mm | 19.3mm x 6.35mm | |
D (SOIC, 16) | 9.00mm x 6mm | 9.00mm x 3.90mm |
PIN | I/O1 | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
1 A | 1 | I | Channel 1 falling edge trigger input when 1B = H; Hold low for other input methods |
1B | 2 | I | Channel 1 rising edge trigger input when 1 A = L; Hold high for other input methods |
1 CLR | 3 | I | Channel 1 rising edge trigger when 1 A = L and 1B = H; Hold high for other input methods; Can cut pulse length short by driving low during output |
1 Q | 4 | O | Channel 1 inverted output |
2Q | 5 | O | Channel 2 output |
2Cext | 6 | — | Channel 2 external capacitor negative connection |
2Rext/Cext | 7 | — | Channel 2 external capacitor and resistor junction connection |
GND | 8 | — | Ground |
2 A | 9 | I | Channel 2 falling edge trigger input when 2B = H; Hold low for other input methods |
2B | 10 | I | Channel 2 rising edge trigger input when 2 A = L; Hold high for other input methods |
2 CLR | 11 | I | Channel 2 rising edge trigger when 2 A = L and 2B = H; Hold high for other input methods; Can cut pulse length short by driving low during output |
2 Q | 12 | O | Channel 2 inverted output |
1Q | 13 | O | Channel 1 output |
1Cext | 14 | — | Channel 1 external capacitor negative connection |
1Rext/Cext | 15 | — | Channel 1 external capacitor and resistor junction connection |
VCC | 16 | — | Power supply |