HD74LV126A Quad. Bus Buffer Gates with 3-state Outputs ADE-205-259 (Z) 1st Edition March 1999 Description The HD74LV126A features independent line drivers with three state outputs. Each output is disabled when the associated output enable (OE) input is low. To ensure the high impedance state during power up or power down, OE should be connected to GND through a pull-down resistor; the minimum value of the resistor is determined by the current souring capability of the driver. Low-voltage and high-speed operation is suitable for the battery-powered products (e.g., notebook computers), and the low-power consumption extends the battery life. Features • • • • • • VCC = 2.0 V to 5.5 V operation All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) All outputs VO (Max.) = 5.5 V (@VCC = 0 V) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C) Output current ±8 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V) Function Table Inputs OE A Output Y H H H H L L L X Z Note: H: L: X: Z: High level Low level Immaterial High impedance HD74LV126A Pin Arrangement 1OE 1 14 VCC 1A 2 13 4OE 1Y 3 12 4A 2OE 4 11 4Y 2A 5 10 3OE 2Y 6 9 3A GND 7 8 3Y (Top view) 2 HD74LV126A Absolute Maximum Ratings Item Supply voltage range Input voltage range* 1 Output voltage range* 1, 2 Symbol Ratings Unit VCC –0.5 to 7.0 V VI –0.5 to 7.0 V VO –0.5 to VCC + 0.5 V –0.5 to 7.0 Conditions Output: H or L VCC: OFF or Output: Z Input clamp current I IK –20 mA VI < 0 Output clamp current I OK ±50 mA VO < 0 or VO > VCC Continuous output current IO ±35 mA VO = 0 to VCC Continuous current through VCC or GND I CC or IGND ±70 mA Maximum power dissipation at Ta = 25°C (in still air)*3 PT 785 mW 500 Storage temperature Tstg –65 to 150 SOP TSSOP °C Notes: 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. 1. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. This value is limited to 5.5 V maximum. 3. The maximum package power dissipation was calculated using a junction temperature of 150°C. 3 HD74LV126A Recommended Operating Conditions Item Symbol Min Max Unit Supply voltage range VCC 2.0 5.5 V Input voltage range VI 0 5.5 V Output voltage range VO 0 VCC V 0 5.5 — –50 µA VCC = 2.0 V — –2 mA VCC = 2.3 to 2.7 V — –8 VCC = 3.0 to 3.6 V — –16 VCC = 4.5 to 5.5 V — 50 µA VCC = 2.0 V — 2 mA VCC = 2.3 to 2.7 V — 8 VCC = 3.0 to 3.6 V — 16 VCC = 4.5 to 5.5 V 0 200 0 100 VCC = 3.0 to 3.6 V 0 20 VCC = 4.5 to 5.5 V –40 85 Output current I OH I OL Input transition rise or fall rate Operating free-air temperature ∆t /∆v Ta ns/V °C Logic Diagram 1A 2OE 2A 3OE 3A 4OE 4A 4 1 2 3 1Y 4 5 6 2Y 10 9 8 3Y 13 12 H or L High impedance state Note: Unused or floating inputs must be held high or low. 1OE Conditions 11 4Y VCC = 2.3 to 2.7 V HD74LV126A DC Electrical Characteristics • Ta = –40 to 85°C Item Symbol VCC (V)* Min Typ Max Unit Input voltage VIH 2.0 1.5 — — V 2.3 to 2.7 VCC × 0.7 — — 3.0 to 3.6 VCC × 0.7 — — 4.5 to 5.5 VCC × 0.7 — — 2.0 — — 0.5 2.3 to 2.7 — — VCC × 0.3 3.0 to 3.6 — — VCC × 0.3 4.5 to 5.5 — — VCC × 0.3 Min to Max VCC – 0.1 — — 2.3 2.0 — — IOH = –2 mA 3.0 2.48 — — IOH = –8 mA 4.5 3.8 — — IOH = –16 mA Min to Max — — 0.1 IOL = 50 µA 2.3 — — 0.4 IOL = 2 mA 3.0 — — 0.44 IOL = 8 mA 4.5 — — 0.55 IOL = 16 mA VIL Output voltage VOH VOL V Test Conditions IOH = –50 µA Input current IIN 0 to 5.5 — — ±1 µA VI = 5.5 V or GND Off-state output current IOZ 5.5 — — ±5 µA VO = VCC or GND Quiescent supply current ICC 5.5 — — 20 µA VI = VCC or GND, IO = 0 Output leakage current IOFF 0 — — 5 µA VI or VO = 0 V to 5.5 V Input capacitance CIN 3.3 — 3 — pF VI = VCC or GND Note: For conditions shown as Min or Max, use the appropriate values under recommended operating conditions. 5 HD74LV126A Switching Characteristics • VCC = 2.5 ± 0.2 V Ta = 25°C Ta = –40 to 85°C Item Symbol Min Typ Max Min Max Unit Test Conditions FROM (Input) TO (Output) Propagation delay time tPLH tPHL — 7.1 13.0 1.0 15.5 ns CL = 15 pF A Y — 9.2 16.5 1.0 18.5 — 7.4 13.0 1.0 15.5 OE Y — 9.5 16.5 1.0 18.5 — 5.7 14.7 1.0 17.0 OE Y — 8.1 18.2 1.0 20.5 Enable time Disable time tZH tZL tHZ tLZ CL = 50 pF ns CL = 15 pF CL = 50 pF ns CL = 15 pF CL = 50 pF • VCC = 3.3 ± 0.3 V Ta = 25°C Ta = –40 to 85°C Item Symbol Min Typ Max Min Max Unit Test Conditions FROM (Input) TO (Output) Propagation delay time tPLH tPHL — 5.0 8.0 1.0 9.5 ns CL = 15 pF A Y — 6.4 11.5 1.0 13.0 — 5.1 8.0 1.0 9.5 OE Y — 6.6 11.5 1.0 13.0 — 4.4 9.7 1.0 11.5 OE Y — 6.1 13.2 1.0 15.0 Enable time Disable time 6 tZH tZL tHZ tLZ CL = 50 pF ns CL = 15 pF CL = 50 pF ns CL = 15 pF CL = 50 pF HD74LV126A Switching Characteristics (cont) • VCC = 5.0 ± 0.5 V Ta = 25°C Ta = –40 to 85°C Item Symbol Min Typ Max Min Max Unit Test Conditions FROM (Input) TO (Output) Propagation delay time tPLH tPHL — 3.5 5.5 1.0 6.5 ns CL = 15 pF A Y — 4.6 7.5 1.0 8.5 — 3.6 5.1 1.0 6.0 OE Y — 4.6 7.1 1.0 8.0 — 3.3 6.8 1.0 8.0 OE Y — 4.3 8.8 1.0 10.0 Enable time Disable time tZH tZL tHZ tLZ CL = 50 pF ns CL = 15 pF CL = 50 pF ns CL = 15 pF CL = 50 pF 7 HD74LV126A Output-skew Characteristics Ta = 25°C Ta = –40 to 85°C Item Symbol VCC = (V) Min Max Min Max Unit Output skew t sk (O) 2.3 to 2.7 — 2.0 — 2.0 ns 3.0 to 3.6 — 1.5 — 1.5 4.5 to 5.5 — 1.0 — 1.0 Note: Skew between any outputs of the same package switching in the same direction. This parameter is warranted but not production tested. Operating Characteristics • CL = 50 pF Ta = 25°C Item Symbol VCC = (V) Min Typ Max Unit Test Conditions Power dissipation capacitance CPD 3.3 — 23.0 — pF f = 10 MHz 5.0 — 27.0 — Test Conditions Noise Characteristics • CL = 50 pF Ta = 25°C Item Symbol VCC = (V) Min Typ Max Unit Quiet output, maximum dynamic VOL VOL (P) 3.3 — 0.2 0.8 V Quiet output, minimum dynamic VOL VOL (V) 3.3 — –0.2 –0.8 Quiet output, minimum dynamic VOH VOH (V) 3.3 — 3.01 — High-level dynamic input voltage VIH (D) 3.3 2.31 — — Low-level dynamic input voltage VIL (D) 3.3 — — 0.99 8 V HD74LV126A Test Circuit VCC Input Pulse Generator Z OUT = 50 Ω See Function Table VCC Output 1 k Ω S1 OPEN See under table GND *1 CL = 15 or 50 pF TEST t PLH /tPHL S1 OPEN t ZH/tHZ t ZL /tLZ GND VCC Note: 1. C L includes probe and jig capacitance. 9 HD74LV126A tf tr • Waveform-1 90 % 50 %VCC Input A VCC 90 % 50 %VCC 10 % 10 % GND t PHL t PLH VOH 50 %VCC 50 %VCC Output Y VOL tr • Waveform-2 tf 90 % 50 %VCC Input OE 10 % 10 % t ZL Waveform - A GND t LZ VCC 50 %VCC t ZH 50 %VCC Waveform - B VCC 90 % 50 %VCC VOL + 0.3 V t HZ VOH – 0.3 V VOL VOH GND Notes: 1. tr ≤ 3 ns, tf ≤ 3 ns 2. Input waveform: PRR ≤ 1 MHz, duty cycle 50% 3. Waveform-A is for an output with internal conditions such that the output is low except when disabled by the output control. 4. Waveform-B is for an output with internal conditions such that the output is high except when disabled by the output control. 10 HD74LV126A Package Dimensions Unit: mm 10.06 10.5 Max 8 5.5 14 1 0.10 ± 0.10 1.42 Max 1.27 *0.42 ± 0.08 0.40 ± 0.06 *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 7 + 0.20 7.80 – 0.30 1.15 0° – 8° 0.70 ± 0.20 0.15 0.12 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DA — Conforms 0.23 g 11 HD74LV126A Unit: mm 8.65 9.05 Max 8 1 7 *0.22 ± 0.03 0.20 ± 0.03 0.635 Max 1.75 Max 3.95 14 0.10 6.10 +– 0.30 1.08 *0.42 ± 0.08 0.40 ± 0.06 0.11 0.14 +– 0.04 0° – 8° 1.27 0.67 0.60 +– 0.20 0.15 0.25 M *Dimension including the plating thickness Base material dimension 12 Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DN Conforms Conforms 0.13 g HD74LV126A Unit: mm 4.40 5.00 5.30 Max 14 8 1 7 0.65 *0.22 0.20 ± 0.06 1.0 0.13 M 6.40 ± 0.20 0.10 *Dimension including the plating thickness Base material dimension *0.17 ± 0.05 0.15 ± 0.04 1.10 Max 0.83 Max 0.07 +0.03 –0.04 +0.08 –0.07 0° – 8° 0.50 ± 0.10 Hitachi Code JEDEC EIAJ Weight (reference value) TTP-14D — — 0.05 g 13 Cautions 1. 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