# 74AHC594T16-13

**Diodes Incorporated** · Logic ICs · TSSOP-16

74AHC594T16-13 from Diodes Incorporated, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Q1 | output | Parallel data output 1 of the storage register, push-pull. |
| 2 | Q2 | output | Parallel data output 2 of the storage register, push-pull. |
| 3 | Q3 | output | Parallel data output 3 of the storage register, push-pull. |
| 4 | Q4 | output | Parallel data output 4 of the storage register, push-pull. |
| 5 | Q5 | output | Parallel data output 5 of the storage register, push-pull. |
| 6 | Q6 | output | Parallel data output 6 of the storage register, push-pull. |
| 7 | Q7 | output | Parallel data output 7 of the storage register, push-pull. |
| 8 | GND | power_in | Ground reference for the device. |
| 9 | Q7S | output | Serial data output used for cascading information between devices. |
| 10 | SHR | input | Shift register reset, active low; sets all shift register values to zero and is independent of all clocks. |
| 11 | SHCP | input | Shift register clock; data is accepted from DS on each positive transition. |
| 12 | STCP | input | Storage register clock; a rising pulse places shift register data into the output register. |
| 13 | STR | input | Storage register reset, active low; sets all shift register values to zero and is independent of all clocks. |
| 14 | DS | input | Serial data input to the shift register, with Schmitt trigger action and inputs accepting up to 5.5V. |
| 15 | Q0 | output | Parallel data output 0 of the storage register, push-pull. |
| 16 | VCC | power_in | Supply voltage, specified from 2.0V to 5.5V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | TSSOP-16 |
| Category | Logic ICs |
| Pins | 16 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 2 |  | 5.5 | V |  | 4 |
| Input Voltage | VI | 0 |  | 5.5 | V |  | 4 |
| Output Voltage | VO | 0 |  |  | V | maximum printed as VCC | 4 |
| Input Transition Rise or Fall Rate | Δt/ΔV |  |  | 100 | ns/V | VCC = 3.0V to 3.6V | 4 |
| Input Transition Rise or Fall Rate | Δt/ΔV |  |  | 20 | ns/V | VCC = 4.5V to 5.5V | 4 |
| Operating Free-Air Temperature | TA | -40 |  | 125 | °C |  | 4 |
| Supply Voltage Range | VCC | -0.5 |  | 7 | V |  | 3 |
| Input Voltage Range | VI | -0.5 |  | 7 | V |  | 3 |
| Voltage applied to output in high or low state | Vo | -0.3 |  |  | V | high or low state; upper limit VCC +0.5 V | 3 |
| Input Clamp Current | IIK | -20 |  |  | mA | VI < -0.5V | 3 |
| Output Clamp Current | IOK | -20 |  |  | mA | VO < -0.5V | 3 |
| Output Clamp Current | IOK |  |  | 20 | mA | VO > VCC +0.5V | 3 |
| Continuous output current | IO | -25 |  | 25 | mA |  | 3 |
| Continuous current through Vcc | ICC |  |  | 75 | mA |  | 3 |
| Continuous current through GND | IGND | -75 |  |  | mA |  | 3 |
| Operating Junction Temperature | TJ | -40 |  | 150 | °C |  | 3 |
| Storage Temperature | TSTG | -65 |  | 150 | °C |  | 3 |
| Total Power Dissipation | PTOT |  |  | 500 | mW |  | 3 |
| ESD HBM Human Body Model ESD Protection | ESD HBM |  |  | 2 | kV |  | 3 |
| ESD CDM Charged Device Model ESD Protection | ESD CDM |  |  | 1 | kV |  | 3 |
| ESD MM Machine Model ESD Protection | ESD MM |  |  | 200 | V |  | 3 |
| High-Level Input Voltage | VIH | 1.5 |  |  | V | VCC = 2.0V; TA = -40°C to +125°C | 4 |
| High-Level Input Voltage | VIH | 2.1 |  |  | V | VCC = 3.0V; TA = -40°C to +125°C | 4 |
| High-Level Input Voltage | VIH | 3.85 |  |  | V | VCC = 5.5V; TA = -40°C to +125°C | 4 |
| Low-Level Input Voltage | VIL |  |  | 0.5 | V | VCC = 2.0V; TA = -40°C to +125°C | 4 |
| Low-Level Input Voltage | VIL |  |  | 0.9 | V | VCC = 3.0V; TA = -40°C to +125°C | 4 |
| Low-Level Input Voltage | VIL |  |  | 1.65 | V | VCC = 5.5V; TA = -40°C to +125°C | 4 |
| High-Level Output Voltage | VOH | 1.9 |  |  | V | IOH = -50μA; VCC = 2.0V; TA = -40°C to +125°C | 4 |
| High-Level Output Voltage | VOH | 2.9 |  |  | V | IOH = -50μA; VCC = 3.0V; TA = -40°C to +125°C | 4 |
| High-Level Output Voltage | VOH | 4.4 |  |  | V | IOH = -50μA; VCC = 4.5V; TA = -40°C to +125°C | 4 |
| High-Level Output Voltage | VOH | 2.4 |  |  | V | IOH = -4mA; VCC = 3.0V; TA = -40°C to +125°C | 4 |
| High-Level Output Voltage | VOH | 3.7 |  |  | V | IOH = -8mA; VCC = 4.5V; TA = -40°C to +125°C | 4 |
| Low-Level Output Voltage | VOL |  |  | 0.1 | V | IOL = 50μA; VCC = 2.0V; TA = -40°C to +125°C | 4 |
| Low-Level Output Voltage | VOL |  |  | 0.55 | V | IOL = 4mA; VCC = 3.0V; TA = -40°C to +125°C | 4 |
| Input Current | II | -2 | 0.01 | 2 | μA | VI = GND or 5.5V; VCC = 5.5V; TA = -40°C to +125°C | 4 |
| Supply Current | ICC |  | 4 | 80 | μA | VI = GND or VCC; IO = 0; VCC = 5.5V; TA = -40°C to +125°C | 4 |
| Input Capacitance | Ci |  | 3.5 | 10 | pF | Vi = VCC or GND; VCC = 5.5V; TA = -40°C to +125°C | 4 |
| HIGH to LOW Propagation Delay SHR to Q7S | tPHL |  | 39 | 225 | ns | Figure 1; VCC = 2.0V; TA = -40°C to +125°C | 6 |
| HIGH to LOW Propagation Delay SHR to Q7S | tPHL |  | 14 | 45 | ns | Figure 1; VCC = 4.5V; TA = -40°C to +125°C | 6 |
| HIGH to LOW Propagation Delay SHR to Q7S | tPHL |  | 12 | 38 | ns | Figure 1; VCC = 6.0V; TA = -40°C to +125°C | 6 |
| Propagation Delay STR to Qn | tPHL |  | 39 | 185 | ns | Figure 1; VCC = 2.0V; TA = -40°C to +85°C | 6 |
| Propagation Delay STR to Qn | tPHL |  | 14 | 37 | ns | Figure 1; VCC = 4.5V; TA = -40°C to +125°C | 6 |
| Propagation Delay STR to Qn | tPHL |  | 12 | 31 | ns | Figure 1; VCC = 6.0V; TA = -40°C to +125°C | 6 |
| Transition Time Serial data output Q7S | tTHL |  | 19 | 110 | ns | Figure 1; VCC = 2.0V; TA = -40°C to +125°C | 6 |
| Transition Time Serial data output Q7S | tTHL |  | 7 | 22 | ns | Figure 1; VCC = 4.5V; TA = -40°C to +125°C | 6 |
| Transition Time Serial data output Q7S | tTHL |  | 6 | 19 | ns | Figure 1; VCC = 6.0V; TA = -40°C to +125°C | 6 |
| Transition Time Parallel Data Outputs QN | tTHL |  | 14 | 90 | ns | Figure 1; VCC = 2.0V; TA = -40°C to +125°C | 6 |
| Transition Time Parallel Data Outputs QN | tTHL |  | 5 | 18 | ns | Figure 1; VCC = 4.5V; TA = -40°C to +125°C | 6 |
| Transition Time Parallel Data Outputs QN | tTHL |  | 4 | 15 | ns | Figure 1; VCC = 6.0V; TA = -40°C to +125°C | 6 |
| Power dissipation capacitance | Cpd |  | 51 |  | pF | f = 1 MHz; all outputs switching; no load; VCC = 5V | 6 |

## CAD (KiCad official)

- Symbol: `74AHC594T16-13`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `74ahc594t16-13-etched.step` / `74ahc594t16-13-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74ahc594t16-13.step` / `74ahc594t16-13.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/74AHC594T16-13.pdf) (11 pp, sha256 `a4fb5787f26c5648`, retrieved 2026-10-21, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/74ahc594t16-13-datasheet.pdf)