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HT74LS247ARZ

Public Made by Adom

by adom

HTCSEMI Buffers, Drivers, Receivers, Transceivers, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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HT74LS247ARZ

HTCSEMI · Buffers, Drivers, Receivers, Transceivers · SOP-16

HT74LS247ARZ from HTCSEMI, in a SOP-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; VIH min 2.0 V, VIL max 0.8 V.
2 C input BCD input C; VIH min 2.0 V, VIL max 0.8 V.
3 LT input Active-low lamp test input; with BI/RBO open or high, a low on LT turns all segment outputs on.
4 BI/RBO bidirectional Blanking input or ripple-blanking output (wire-AND); a low on BI turns all segments off, output rated IOH -50 µA and IOL 3.2 mA.
5 RBI input Ripple-blanking input; must be open or high if blanking of a decimal zero is not desired.
6 D input BCD input D (MSB); VIH min 2.0 V, VIL max 0.8 V.
7 A input BCD input A (LSB); VIH min 2.0 V, VIL max 0.8 V.
8 GND power_in Ground.
9 e output Active-low open-collector segment e output; sinks up to 24 mA, off-state voltage up to 15 V.
10 d output Active-low open-collector segment d output; sinks up to 24 mA, off-state voltage up to 15 V.
11 c output Active-low open-collector segment c output; sinks up to 24 mA, off-state voltage up to 15 V.
12 b output Active-low open-collector segment b output; sinks up to 24 mA, off-state voltage up to 15 V.
13 a output Active-low open-collector segment a output; sinks up to 24 mA, off-state voltage up to 15 V.
14 g output Active-low open-collector segment g output; sinks up to 24 mA, off-state voltage up to 15 V.
15 f output Active-low open-collector segment f output; sinks up to 24 mA, off-state voltage up to 15 V.
16 VCC power_in Supply voltage, 4.75 V to 5.25 V (5.0 V typical).

Key specifications

Parameter Value
Manufacturer HTCSEMI
Package SOP-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 BI/RBO 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/Turn-On Time from A Input tPLH/tPHL 100 ns VCC = 5.0 V, TA = 25°C, CL = 15 pF, RL = 665 Ω 5
Turn-Off/Turn-On Time from RBI Input tPHL/tPLH 100 ns VCC = 5.0 V, TA = 25°C, CL = 15 pF, RL = 665 Ω 5

CAD (KiCad official)

  • Symbol: HT74LS247ARZ
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)
  • 3D model files: ht74ls247arz-etched.step / ht74ls247arz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ht74ls247arz.step / ht74ls247arz.glb are the bare package body.

Provenance

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

  • Datasheet: HTCSEMI datasheet (7 pp, sha256 75e82e17e30d5eb5, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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