74HC109; 74HCT109
Dual JK flip-flop with set and reset; positive-edge-trigger
The 74HC109; 74HCT109 is a dual positive edge triggered JK flip-flop featuring individual J and K inputs, clock (CP) inputs, set (SD) and reset (RD) inputs and complementary Q and Q outputs. The set and reset are asynchronous active LOW inputs and operate independently of the clock input. The J and K inputs control the state changes of the flip-flops as described in the mode select function table. The J and K inputs must be stable one set-up time prior to the LOW-to-HIGH clock transition for predictable operation. The JK design allows operation as a D-type flip-flop by connecting the J and K inputs together. This device features reduced input threshold levels to allow interfacing to TTL logic levels. Inputs also include clamp diodes, this enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
Schmitt-trigger action in the clock input makes the circuit highly tolerant to slower clock rise and fall times.
Features and benefits
J and K inputs for easy D-type flip-flop
Toggle flip-flop or "do nothing" mode
Wide supply voltage range:
For 74HC109: from 2.0 V to 6.0 V
For 74HCT109: from 4.5 V to 5.5 V
CMOS low power dissipation
High noise immunity
Input levels:
For 74HC109: CMOS level
For 74HCT109: TTL level
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
74HC109 complies with JEDEC standards:
JESD8C (2.7 V to 3.6 V)
JESD7A (2.0 V to 6.0 V)
74HCT109 complies with JEDEC standard JESD7A (2.0 V to 6.0 V)
ESD protection:
HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Specified from -40 °C to +85 °C and from -40 °C to +125 °C
Parametrics
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|---|
| 74HC109D | 2.0 - 6.0 | CMOS | ± 5.2 | 15 | 75 | low | -40~125 | SO16 |
| 74HC109PW | 2.0 - 6.0 | CMOS | ± 5.2 | 15 | 75 | low | -40~125 | TSSOP16 |
| 74HCT109D | 4.5 - 5.5 | TTL | ± 4 | 17 | 61 | low | -40~125 | SO16 |
| 74HCT109PW | 4.5 - 5.5 | TTL | ± 4 | 17 | 61 | low | -40~125 | TSSOP16 |
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| 74HC109D | 74HC109D,653 (933714480653) |
Active | 74HC109D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
Not available |
| 74HC109PW | 74HC109PWJ (935691205118) |
Active | 74HC109 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
| 74HCT109D | 74HCT109D,653 (933714960653) |
Active | 74HCT109D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
Not available |
| 74HCT109PW | 74HCT109PW,118 (935186330118) |
Active | HCT109 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
All type numbers in the table below are discontinued.
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| 74HCT109DB | 74HCT109DB,112 (935186320112) |
Obsolete | HCT109 |
SSOP16 (SOT338-1) |
SOT338-1 |
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE |
Not available |
| 74HCT109DB,118 (935186320118) |
Obsolete | HCT109 | Not available |
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| 74HC109D | 74HC109D,653 | 74HC109D |
|
|
| 74HC109PW | 74HC109PWJ | 74HC109PW |
|
|
| 74HCT109D | 74HCT109D,653 | 74HCT109D |
|
|
| 74HCT109PW | 74HCT109PW,118 | 74HCT109PW |
|
|
All type numbers in the table below are discontinued.
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| 74HCT109DB | 74HCT109DB,112 | 74HCT109DB |
|
|
| 74HCT109DB | 74HCT109DB,118 | 74HCT109DB |
|
|
Documentation (18)
| File name | Title | Type | Date |
|---|---|---|---|
| 74HC_HCT109 | Dual JK flip-flop with set and reset; positive-edge-trigger | Data sheet | 2024-02-21 |
| AN11044 | Pin FMEA 74HC/74HCT family | Application note | 2019-01-09 |
| mbk217 | Block diagram: 74HC109D, 74HC109DB, 74HC109N, 74HCT109D, 74HCT109DB, 74HCT109N, 74HCT109PW | Block diagram | 2009-11-04 |
| SOT109-1 | 3D model for products with SOT109-1 package | Design support | 2020-01-22 |
| SOT403-1 | 3D model for products with SOT403-1 package | Design support | 2020-01-22 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| SO16_SOT109-1_mk | plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm body | Marcom graphics | 2017-01-28 |
| TSSOP16_SOT403-1_mk | plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body | Marcom graphics | 2017-01-28 |
| SSOP16_SOT338-1_mk | plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body | Marcom graphics | 2017-01-28 |
| SOT109-1 | plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm body | Package information | 2023-11-07 |
| SOT403-1 | plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm body | Package information | 2023-11-08 |
| SOT338-1 | plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body | Package information | 2022-06-20 |
| SO-SOJ-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 |
| SSOP-TSSOP-VSO-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 |
| HCT_USER_GUIDE | HC/T User Guide | User manual | 1997-10-31 |
| SO-SOJ-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
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