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HT74LS247ANZ
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HTCSEMI Buffers, Drivers, Receivers, Transceivers, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownHT74LS247ANZ
HTCSEMI · Buffers, Drivers, Receivers, Transceivers · DIP-16
HT74LS247ANZ from HTCSEMI, in a DIP-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 | B | input | BCD input B, with input LOW voltage max 0.8 V and HIGH min 2.0 V. |
| 2 | C | input | BCD input C, with input LOW voltage max 0.8 V and HIGH min 2.0 V. |
| 3 | LT | input | Lamp test input, active low; with BI/RBO open or high, a low turns all segment outputs on. |
| 4 | BI/RBO | bidirectional | Blanking input (active low turns all segments off) or ripple-blanking output (wire-AND), with IOH of -50 µA and IOL of 3.2 mA max. |
| 5 | RBI | input | Ripple-blanking input, active low; blanks a decimal zero when A-D are low and LT is high, and must be open or high if zero blanking is not desired. |
| 6 | D | input | BCD input D, with input LOW voltage max 0.8 V and HIGH min 2.0 V. |
| 7 | A | input | BCD input A, with input LOW voltage max 0.8 V and HIGH min 2.0 V. |
| 8 | GND | power_in | Ground. |
| 9 | e | output | Active-low open-collector segment e output, rated 15 V off-state and 24 mA on-state sink current. |
| 10 | d | output | Active-low open-collector segment d output, rated 15 V off-state and 24 mA on-state sink current. |
| 11 | c | output | Active-low open-collector segment c output, rated 15 V off-state and 24 mA on-state sink current. |
| 12 | b | output | Active-low open-collector segment b output, rated 15 V off-state and 24 mA on-state sink current. |
| 13 | a | output | Active-low open-collector segment a output, rated 15 V off-state and 24 mA on-state sink current. |
| 14 | g | output | Active-low open-collector segment g output, rated 15 V off-state and 24 mA on-state sink current. |
| 15 | f | output | Active-low open-collector segment f output, rated 15 V off-state and 24 mA on-state sink current. |
| 16 | VCC | power_in | Supply voltage, 4.75 V min, 5.0 V typ, 5.25 V max. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTCSEMI |
| Package | DIP-16 |
| Category | Logic |
| 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 | 4.75 | 5 | 5.25 | V | 1 | |
| Operating Ambient Temperature Range | TA | 0 | 25 | 70 | °C | 1 | |
| Output Current, High BI/RBO | IOH | -50 | µA | BI/RBO | 1 | ||
| Output Current, Low BI/RBO | IOL | 3.2 | mA | BI/RBO | 1 | ||
| Off-State Output Voltage a-g | VO(off) | 15 | V | a-g | 1 | ||
| On-State Output Current a-g | IO(on) | 24 | mA | a-g | 1 | ||
| Input HIGH Voltage | VIH | 2 | V | Guaranteed Input HIGH Voltage for All Inputs | 5 | ||
| Input LOW Voltage | VIL | 0.8 | V | Guaranteed Input LOW Voltage for All Inputs | 5 | ||
| Input Clamp Diode Voltage | VIK | -0.65 | -1.5 | V | VCC = MIN, IIN = -18 mA | 5 | |
| Output HIGH Voltage BI/RBO | VOH | 2.4 | 4.2 | V | VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table | 5 | |
| Output LOW Voltage | VOL | 0.25 | 0.4 | V | IOL = 1.6 mA, VCC = VCC MIN, VIN = VIL or VIH | 5 | |
| Output LOW Voltage BI/RBO | VOL | 0.35 | 0.5 | V | IOL = 3.2 mA | 5 | |
| Off-State Output Current a-g | IO(off) | 250 | µA | VCC = MAX, VIH = 2.0 V, VO(off) = 15 V, VIL = MAX | 5 | ||
| On-State Output Voltage a-g | VO(on) | 0.25 | 0.4 | V | IO(on) = 12 mA, VCC = MIN, VIH = 2.0 V | 5 | |
| On-State Output Voltage a-g | VO(on) | 0.35 | 0.5 | V | IO(on) = 24 mA | 5 | |
| Input HIGH Current | IIH | 20 | µA | VCC = MAX, VIN = 2.7 V | 5 | ||
| Input HIGH Current | IIH | 0.1 | mA | VCC = MAX, VIN = 7.0 V | 5 | ||
| Input LOW Current, any input except BI/RBO | IIL | -0.4 | mA | VCC = MAX, VIN = 0.4 V | 5 | ||
| Input LOW Current BI/RBO | IIL | -1.2 | mA | VCC = MAX, VIN = 0.4 V | 5 | ||
| Short Circuit Current BI/RBO | IOS | -0.3 | -2 | mA | VCC = MAX (Note 1) | 5 | |
| Power Supply Current | ICC | 7 | 13 | mA | VCC = MAX | 5 | |
| Turn-Off Time from A Input | tPLH | 100 | ns | VCC = 5.0 V, TA = 25°C, CL = 15 pF, RL = 665 Ω | 5 | ||
| Turn-On Time from A Input | tPHL | 100 | ns | VCC = 5.0 V, TA = 25°C, CL = 15 pF, RL = 665 Ω | 5 | ||
| Turn-Off Time from RBI Input | tPHL | 100 | ns | VCC = 5.0 V, TA = 25°C, CL = 15 pF, RL = 665 Ω | 5 | ||
| Turn-On Time from RBI Input | tPLH | 100 | ns | VCC = 5.0 V, TA = 25°C, CL = 15 pF, RL = 665 Ω | 5 | ||
| Typical Power Dissipation | 35 | mW | 2 |
CAD (KiCad official)
- Symbol:
HT74LS247ANZ - Footprint:
Package_DIP:DIP-16_W7.62mm - 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files:
ht74ls247anz-etched.step/ht74ls247anz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ht74ls247anz.step/ht74ls247anz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTCSEMI datasheet (7 pp, sha256
75e82e17e30d5eb5, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).