HD74LVC138 3-to-8-line Decoder / Demultiplexer REJ03D0349–0300Z (Previous ADE-205-068B (Z)) Rev.3.00 Jul. 23, 2004 Description The HD74LVC138 has three binary select inputs in a 16 pin package. If the device is enabled these inputs determine which one of the eight normally high outputs will go low. Two active low and one active high enables are provided to ease the cascading of decoders. Low voltage and high-speed operation is suitable at the battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation. Features • • • • • • VCC = 2.0 V to 5.5 V All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C) High output current ±24 mA (@VCC = 3.0 V to 5.5 V) Ordering Information Part Name Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity) HD74LVC138FPEL HD74LVC138TELL SOP–16 pin (JEITA) TSSOP–16 pin FP–16DAV TTP–16DAV FP T EL (2,000 pcs/reel) ELL (2,000 pcs/reel) Note: Please consult the sales office for the above package availability. Function Table Inputs Enable Outputs Select G1 X X L G2A X H X G2B H X X C X X X B X X X A X X X Y0 H H H Y1 H H H Y2 H H H Y3 H H H Y4 H H H Y5 H H H Y6 H H H Y7 H H H H H H H H H H H L L L L L L L L L L L L L L L L L L L L H H H H L L H H L L H H L H L H L H L H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H: L: X: High level Low level Immaterial Rev.3.00 Jul. 23, 2004 page 1 of 5 HD74LVC138 Pin Arrangement 16 VCC A 1 B 2 B C 3 A Y0 15 Y0 C Y1 14 Y1 G2A 4 G2A Y2 13 Y2 G2B 5 G2B Y3 12 Y3 G1 6 G1 Y4 11 Y4 Y7 7 Y7 Y5 10 Y5 Y6 9 Y6 GND 8 (Top view) Absolute Maximum Ratings Item Symbol Ratings Unit Supply voltage VCC Input diode current Input voltage Output diode current IIK VI IOK V mA V mA Output voltage Output current VCC, GND current / pin Storage temperature VO IO ICC or IGND Tstg –0.5 to 6.0 –50 –0.5 to 6.0 –50 50 –0.5 to VCC +0.5 ±50 100 –65 to +150 Conditions VI = –0.5 V VO = –0.5 V VO = VCC +0.5 V V mA mA °C Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of which may be realized at the same time. Rev.3.00 Jul. 23, 2004 page 2 of 5 HD74LVC138 Recommended Operating Conditions Item Symbol Ratings Unit Conditions Supply voltage VCC 1.5 to 5.5 V Data retention Input / output voltage VI VO Ta IOH Operating temperature Output current IOL Input rise / fall time *1 tr, tf 2.0 to 5.5 0 to 5.5 0 to VCC –40 to 85 –12 –24*2 12 24*2 10 At operation G, A, B, C Y0 to Y7 V V °C mA VCC = 2.7 V VCC = 3.0 V to 5.5 V VCC = 2.7 V VCC = 3.0 V to 5.5 V mA ns/V Notes: 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics. 2. Duty cycle ≤ 50% Electrical Characteristics Ta = –40 to 85°C Item Symbol VCC (V) Min Max Unit Input voltage VIH 2.7 to 3.6 4.5 to 5.5 2.7 to 3.6 4.5 to 5.5 2.7 to 5.5 2.7 3.0 3.0 4.5 2.7 to 5.5 2.7 3.0 4.5 0 to 5.5 5.5 3.0 to 3.6 2.0 VCC×0.7 — — VCC –0.2 2.2 2.4 2.0 3.8 — — — — — — — — — 0.8 VCC×0.3 — — — — — 0.2 0.4 0.55 0.55 ±5.0 20 500 V VIL Output voltage VOH VOL Input current Quiescent supply current IIN ICC ∆ICC Test Conditions V V IOH = –100 µA IOH = –12 mA IOH = –24 mA V IOL = 100 µA IOL = 12 mA IOL = 24 mA µA µA µA VIN = 5.5 V or GND VIN = VCC or GND VIN = one input at(VCC –0.6)V, other inputs at VCC or GND Switching Characteristics Item Symbol VCC (V) Min Typ Max Unit From (Input) Propagation delay time tPLH tPHL 7.0 5.0 3.5 3.0 15.0 10.0 9.0 7.5 — — G, A, B, C Y0 to Y7 CIN CO — 1.5 — — — ns Input capacitance Output capacitance 2.7 3.3±0.3 5.0±0.5 2.7 2.7 Ta = –40 to 85°C Rev.3.00 Jul. 23, 2004 page 3 of 5 pF pF To (Output) HD74LVC138 Test Circuit VCC VCC A Pulse Generator Zout = 50 Ω Output Y 0 to Y 7 B See Function Table Input 450 Ω CL = 50 pF C 50 Ω Scope G1 G 2A G 2B Note: 1. CL includes probe and jig capacitance. Waveforms tr tf 90 % Input VIH 90 % Vref Vref 10 % 10 % t PLH GND t PHL VOH In phase output Vref Vref VOL t PHL t PLH VOH Out of phase output Vref Vref VOL Symbol VIH Vref Notes: 1. tr = 2.5 ns, tf = 2.5 ns 2. Input waveform : PRR = 10 MHz, duty cycle 50% Rev.3.00 Jul. 23, 2004 page 4 of 5 VCC = 2.7 V, 3.3±0.3 V VCC = 5.0±0.5 V 2.7 V VCC 1.5 V 50%VCC HD74LVC138 Package Dimensions As of January, 2003 Unit: mm 10.06 10.5 Max 9 1 8 2.20 Max *0.20 ± 0.05 5.5 16 1.27 *0.40 ± 0.06 1.15 0 ˚ – 8˚ 0.10 ± 0.10 0.80 Max 0.20 7.80 +– 0.30 0.70 ± 0.20 0.15 0.12 M Package Code JEDEC JEITA Mass (reference value) *Ni/Pd/Au plating FP-16DAV — Conforms 0.24 g As of January, 2003 Unit: mm 4.40 5.00 5.30 Max 16 9 1 8 0.65 *0.20 ± 0.05 1.0 0.13 M Rev.3.00 Jul. 23, 2004 page 5 of 5 *0.15 ± 0.05 1.10 Max *Ni/Pd/Au plating 0.10 0.07 +0.03 –0.04 6.40 ± 0.20 0.65 Max 0˚ – 8˚ 0.50 ± 0.10 Package Code JEDEC JEITA Mass (reference value) TTP-16DAV — — 0.05 g Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Keep safety first in your circuit designs! 1. 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