HEF4043BT: Quad R/S latch with 3-state outputs
The HEF4043B is a quad R/S latch with 3-state outputs with a common output enable input (OE). Each latch has an active HIGH set input (1S to 4S), an active HIGH reset input (1R to 4R) and an active HIGH 3-state output (1Q to 4Q).
When OE is HIGH, the latch output (nQ) is determined by the nR and nS inputs. When OE is LOW, the latch outputs are in the high impedance OFF-state. OE does not affect the state of the latch. The high impedance off-state feature allows common bussing of the outputs.
It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input.
sot109-1_3d
Data Sheets (1)
Application Notes (2)
Brochures (2)
Package Information (1)
Supporting Information (2)
Ordering Information
| Product | Status | Family | Function | VCC (V) | Logic switching levels | Description | Package version | Output drive capability (mA) | tpd (ns) | No of bits | Power dissipation considerations | Tamb (Cel) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name | No of pins |
|---|
| HEF4043BT | Active | HEF4000B | Latches/registered drivers | 4.5 - 15 | CMOS | quad R/S latch with set and reset (3-state) | SOT109-1 | +/- 2.4 | 25 | 4 | medium | -40~85 | 83 | 5.6 | 42.1 | SO16 | 16 |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|
| HEF4043BT | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE
SO-SOJ-REFLOW
SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | HEF4043BT,653
(9333 728 80653) | HEF4043BT | HEF4043BT |    | week 6, 2004 | 75.3 | 2.99 | 3.34E8 | 1 | 1 |
| Bulk Pack, CECC | Active | HEF4043BT,652
(9333 728 80652) | HEF4043BT | HEF4043BT | | week 6, 2004 | 75.3 | 2.99 | 3.34E8 | 1 | 1 |
