TECHNICAL DATA Quad 3-State Noninverting Buffers IN74VHCT126 is high-speed logic IC made by CMOS technology and designed for use in high-performance calculating systems with a wide supply voltage range. As for operation speed, IN74VHCT126 can be compared with equivalent bipolar ICs based on Schottky TTL and two times surpasses ICs of IN74НС series. IN74VHCT126 tolerates operation under conditions when voltage on input & output is exceeded up to 7V without affecting characteristics and IC reliability. This possibility allows to use IN74VHCT126 in radio-electronic devices for interfacing with supply voltages 5V and 3V, eliminate IC failure under supply voltage source emergency outage. Use of output edge shaping block in the microcircuit allows to reduce noise amplitude of noises when switching outputs into the same state simultaneously. Input levels of IN74VHCT126 are compatible with TTL level and output levels with CMOS levels. IN74VHCT126 ORDERING INFORMATION IN74VHCT126N Plastic IN74VHCT126D SOIC TA = -40° to 85° C for all packages Features: • • • • • • • • • • Supply voltage range 4.5 to 5.5 V. Output current 8 mA. Low consumption current: 0.2 mkA (typical value) at Та = 25 °С. Latchup current not less than 300 mA at Та = 85 °С. Tolerable value of static potential not less than 2000 V as per human body model (HBM) and not less than 200 V as per machine model (ММ). Ambient operation temperature minus 40 to plus 85 °С. Balanced signal propagation delay. Ensures voltage exceeding mode on input Low noise level at the simultaneous switching of outputs in the same state: VOLP = 0.8 V (max). For pins and functions, compatible with IN74HCT126. . 1 IN74VHCT126 IN74VHCT126 truth table Input Output G A Y L X Z H L L H H H Note – H - high voltage level; L – low voltage level; X - any voltage level (low or high); Z - output in the third Pinout G1 01 14 VCC A1 02 13 G4 Y1 03 12 A4 G2 04 11 Y4 A2 05 10 G3 Y2 06 09 A3 GND 07 08 Y3 Pins description in IN74VHCT126 Pin No. 01 02 03 04 05 06 07 08 09 10 11 12 13 14 Symbol G1 A1 Y1 G2 A2 Y2 GND Y3 A3 G3 Y4 A4 G4 VCC Description Input ENABLE OUTPUT Input Output Input ENABLE OUTPUT Input Output Common output Output Input Input ENABLE OUTPUT Output Input Input ENABLE OUTPUT Supply output from voltage source 2 IN74VHCT126 Absolute maximum conditions* Parameter, unit Supply voltage, V Input voltage, V Output voltage, V Output voltage, V Input diode current, mA Current of common output and supply output, mA Output current, mA Output diode current, mA Dissipated power, mW Symbol VCC Vin Vout Vout1 Iik Icc Value min -0.5 -0.5 -0.5 -0.5 - max 7.0 7.0 VCC + 0.5B 7.0 -20 ±50 ±25 ±20 180 Iout Iok Pd *Under absolute maximum conditions operation of microcircuit is not guaranteed. Operation is guaranteed under maximum conditions Maximum conditions Parameter, unit Supply voltage, V Input voltage,V Output voltage, V Output voltage, V Output current, mA Input rise and fall time, ns/V * Outputs in the third state Symbol VCC Vin Vout Vout1 Iout tLH, tHL Value min 4.5 0 0 0 0 max 5.5 VCC VCC 5.5* ±8.0 20 3 IN74VHCT126 DC electrical characteristics Value Symbol Parameter Test conditions VIH High input voltage - VIL Low input voltage - VOH High output voltage VI = VIH or VIL IO = -50 mkA VI = VIH or VIL; IO = -8 mA Low output voltage VI = VIH or VIL IO = 50 mkA VI = VIH or VIL IO = 8 mA Output current in VI = 2.0V "off" state VO = VCC or 0V Input current VI = 0 V or VCC High level input VI = 5.5V current Consumption current VI =VCC or 0V TTL-input VI = 3.4 V consumption current VOL IOZ II IIH1 ICC ICCT 25 °C VCC, V min 2.0 max - –40 to 85 °C min max 2.0 - Unit 4.5 – 5.5 4.5 – 5.5 4.5 5.5 V – 0.8 – 0.8 4.42 5.42 – – 4.4 5.4 – – 4.5 3.94 – 3.80 – 4.5 5.5 – – 0.09 0.09 – – 0.1 0.1 4.5 – 0.36 – 0.44 5.5 - ±0.25 - ±2.5 uA 5.5 0 - ±0.1 ±0.1 - ±1.0 ±1.0 uA 5.5 5.5 - 4.0 1.35 - 40.0 1.5 mA 4 IN74VHCT126 AC electrical characteristics (tLH = tHL = 3.0 ns) Value Symbol Parameter Test conditions tPHL, tPLH Propagation delay time Fig 1 when switching "on", "off" tPHZ , tPLZ Propagation delay time Fig 2 under transition from high , low level into "off" state tPZH , tPZL Propagation delay time Fig 2 under transition from «off» state into high, low level delays tOSLH, Propagation between tOSHL difference outputs CL, pF VCC, V 25 °C –40 to 85 °C min max – 6.5 – 8.5 Unit 5.0 ± 0.5 15 50 min – – max 5.5 7.5 5.0 ± 0.5 50 – 8.8 – 10.0 ns 5.0 ± 0.5 15 50 – – 5.1 7.1 – – 6.0 8.0 ns 5.0 ± 0.5 50 – 1.0 – 1.0 ns ns Capacitance characteristics Symbol CI CO CРD Parameter Input capacity Output capacity Dynamic capacity Test conditions VI = 0 V orVCC Value 25 °C min max 10 12 30 VCC, V 5.0 5.0 5.0 Unit pF pF pF Noise characteristics (CL = 50 pF) Parameter Symbol VOLP VOLV VIHD VILD Positive noise of low output voltage Negative noise of low output voltage Input dynamic high voltage Input dynamic low voltage Unit Value VCC, V 5.0 5.0 min -0.8 5.0 5.0 3.5 max 0.8 - V 1.5 5 IN74VHCT126 - Time diagram of input and output pulses tHL tLH 0.9 0.9 G 3.0 V 0.5 0.5 0V 0.1 0.1 tPZH VOH 0.9 tPHZ Y 1.5 V 0 V VCC tPLZ Y tPZL 1.5 V 0.1 VOL Fig. 1 tLH tHL 0.9 A 0.5 3.0 V 0.9 0.5 0.1 GND 0.1 tPHL tPLH VCC Y 1.5 V 1.5 V 0V Fig.2 6 IN74VHCT126 N SUFFIX PLASTIC DIP (MS - 001AA) A Dimension, mm 8 14 B 7 1 Symbol MIN MAX A 18.67 19.69 B 6.1 7.11 5.33 C F L C -T- SEATING PLANE N G M K J H D 0.25 (0.010) M T NOTES: 1. Dimensions “A”, “B” do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side. D 0.36 0.56 F 1.14 1.78 G 2.54 H 7.62 J 0° 10° K 2.92 3.81 L 7.62 8.26 M 0.2 0.36 N 0.38 D SUFFIX SOIC (MS - 012AB) Dimension, mm A 14 8 H B 1 G P 7 R x 45 C -TK D SEATING PLANE M Symbol MIN MAX A 8.55 8.75 B 3.8 4 C 1.35 1.75 D 0.33 0.51 F 0.4 1.27 G 1.27 H 5.27 J 0° 8° K 0.1 0.25 1. Dimensions A and B do not include mold flash or protrusion. M 0.19 0.25 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B ‑ 0.25 mm (0.010) per side. P 5.8 6.2 R 0.25 0.5 J 0.25 (0.010) M T C M NOTES: F 7