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| TECHNICAL DATA Octal Buffer /Line Driver NINV (3-state) IN74VHCT244 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, IN74VHCT244 can be compared with equivalent bipolar ICs based on Schottky TTL and two times surpasses ICs of IN74 series. IN74VHCT244 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 IN74VHCT244 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 IN74VHCT244 are compatible with TTL level and output levels with CMOS levels. IN74VHCT244 ORDERING INFORMATION IN74VHCT244N Plastic IN74VHCT244DW 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 = 25 . Latchup current not less than 300 mA at = 85 . 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 (). * Ambient operation temperature minus 40 to plus 85 . * 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 IN74HCT244. * * * * * . 1 IN74VHCT244 IN74VHCT244 truth table Input Output G A L H X Y L H Z L L H Note - H - high voltage level; L - low voltage level; X - any voltage level (low or high); Z - output in third state Pins description in IN74VHC241 Pinout 1G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND VCC 2G 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 Pin No. 01 20 19 18 17 16 15 14 13 12 11 Symbol 1G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 2A1 1Y4 2A2 1Y3 2A3 1Y2 2A4 1Y1 Description Input OUTPUT ENABLE Data input Data output Data input Data output Data input Data output Data input Data output Common output Data input Data output Data input Data output Data input Data output Data input Data output Input OUTPUT ENABLE Supply output from voltage source 01 02 03 04 05 06 07 08 09 10 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 2G VCC 2 IN74VHCT244 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 Iout Iok Pd min -0.5 -0.5 -0.5 -0.5 Value max 7.0 7.0 VCC + 0.5B 7.0 -20 75 25 20 180 *Under absolute maximum conditions operation of microcircuit is not guaranteed. Operation is guaranteed under maximum conditions Maximum conditions Parameter, unit Symbol min 4.5 0 0 0 0 Value max 5.5 VCC VCC 5.5* 8.0 20 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 VCC Vin Vout Vout1 Iout tLH, tHL 3 IN74VHCT244 DC electrical characteristics Value Symbo l VIH VIL VOH Parameter High input voltage Test conditions VCC, V 25 C min 2.0 - 4.42 5.42 3.94 - - - max 0.8 - - - 0.09 0.09 0.36 0.25 0.1 0.1 4.0 1.35 -40 to 85 C min max 2.0 - 4.4 5.4 3.80 - - - 0.8 - - - 0.1 0.1 0.44 2.5 1.0 1.0 40.0 1.5 mA Unit VOL IOZ II IIH1 ICC ICCT 4.5 - VO 0.1 V or 5.5 VO VCC -0.1 Low input voltage 4.5 - VO 0.1 V or 5.5 VO VCC -0.1 High output voltage VI = VIH or VIL 4.5 IO = -50 mkA 5.5 VI = VIH or VIL; 4.5 IO = -8 mA Low output voltage VI = VIH or VIL 4.5 IO = 50 mkA 5.5 VI = VIH or VIL 4.5 IO = 8 mA 5.5 Output current in VI = 2.0V "off" state VO = VCC or 0V Input current VI = 0 V or VCC 5.5 High level input VI = 5.5V 0 current Consumption current VI =VCC or 0V 5.5 TTL-input VI consumption current = 3.4 V 5.5 V - - uA 4 IN74VHCT244 AC electrical characteristics (tLH = tHL = 3.0 ns) Value Symbol Parameter Test conditions VCC, V CL, pF 25 C min - - - max 7.4 8.4 11.4 -40 to 85 C min max - 8.5 - 9.5 - 13.0 Unit ns ns 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 5.0 0.5 15 50 5.0 0.5 50 5.0 0.5 15 50 - - 10.4 11.4 - - 12.0 13.0 ns 5.0 0.5 50 - 1.0 - 1.0 ns Capacitance characteristics Symbol CI CO CD Parameter Input capacity Output capacity Dynamic capacity Test conditions VI = 0 V orVCC VCC, V 5.0 5.0 5.0 Value 25 C min max 10 18 36 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 VCC, V 5.0 5.0 5.0 5.0 min -1.1 2.0 0.8 Value max 1.1 Unit V 5 IN74VHCT244 - - Time diagram of input and output pulses tLH tHL 0.9 A 0.1 tPLH 0.5 0.5 0.1 tPHL 0.9 3.0 V GND VCC Y 1.5 V 1.5 B 0V Fig. 1 tHL G 0.9 0.5 0.1 tPZH Y 0.1 tLH 0.9 0.5 3.0 V 0V 0.9 tPHZ VOH 1.5 V tPLZ 0V VCC Y tPZL 1.5 V 0.1 VOL Fig.2 6 IN74VHCT244 N SUFFIX PLASTIC DIP (MS - 001AD) A Dimension, mm 20 11 B 1 10 Symbol A B C MIN 24.89 6.1 MAX 26.92 7.11 5.33 F L D F 0.36 1.14 2.54 7.62 0 2.92 7.62 0.2 0.38 0.56 1.78 C -T- SEATING N G D 0.25 (0.010) M T K PLANE G H H J M J K L M N 10 3.81 8.26 0.36 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 SUFFIX SOIC (MS - 013AC) A 20 11 Dimension, mm Symbol MIN 12.6 7.4 2.35 0.33 0.4 1.27 9.53 0 0.1 0.23 10 0.25 8 0.3 0.32 10.65 0.75 MAX 13 7.6 2.65 0.51 1.27 H B P A B 1 G 10 C R x 45 C D F -TD 0.25 (0.010) M T C M K SEATING PLANE J F M G H J K M P R NOTES: 1. Dimensions A and B do not include mold flash or protrusion. 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B 0.25 mm (0.010) per side. 7 |
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