HD74HCT244 Octal Buffers/Line Drivers/Line Receivers (with inverted 3-state outputs) REJ03D0664–0200 (Previous ADE-205-553) Rev.2.00 Mar 30, 2006 Description The HD74HCT244 is a non-inverting buffer and has two active low enable (1G and 2G). Each enable independently controls 4 buffers. This device does not have schmitt trigger inputs. Features • • • • • • • LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (A to Y) = 10 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 4.5 to 5.5 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation Taping Abbreviation (Quantity) HD74HCT244P DILP-20 pin PRDP0020AC-B (DP-20NEV) P — HD74HCT244FPEL SOP-20 pin (JEITA) PRSP0020DD-B (FP-20DAV) FP EL (2,000 pcs/reel) HD74HCT244RPEL SOP-20 pin (JEDEC) PRSP0020DC-A (FP-20DBV) RP EL (1,000 pcs/reel) PTSP0020JB-A T (TTP-20DAV) Note: Please consult the sales office for the above package availability. HD74HCT244TELL TSSOP-20 pin ELL (2,000 pcs/reel) Function Table Inputs G H L L H L X Z : : : : high level low level irrelevant off (high-impedance) state of a 3-state output Rev.2.00 Mar 30, 2006 page 1 of 6 A X H L Output Y Z H L HD74HCT244 Pin Arrangement 1G 1 20 VCC 1A1 2 19 2G 2Y4 3 18 1Y1 1A2 4 17 2A4 2Y3 5 16 1Y2 1A3 6 15 2A3 2Y2 7 14 1Y3 1A4 8 13 2A2 2Y1 9 12 1Y4 GND 10 11 2A1 (Top view) Logic Diagram To three other inverters VCC One of 8 inverters Input A Y Strobe G Absolute Maximum Ratings Item Supply voltage range Input / Output voltage Input / Output diode current Output current VCC, GND current Power dissipation Storage temperature Symbol VCC VIN, VOUT IIK, IOK IO ICC or IGND PT Tstg Ratings –0.5 to 7.0 –0.5 to VCC +0.5 ±20 ±35 ±75 500 –65 to +150 Unit V V mA mA mA mW °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.2.00 Mar 30, 2006 page 2 of 6 HD74HCT244 Recommended Operating Conditions Item Supply voltage Input / Output voltage Operating temperature Input rise / fall time*1 Symbol VCC VIN, VOUT Ta tr, tf Ratings 4.5 to 5.5 0 to VCC –40 to 85 0 to 500 Unit V V °C ns Conditions VCC = 4.5 V Notes: 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics. Electrical Characteristics Item Symbol VCC (V) Input voltage Output voltage VIH VIL VOH VOL Off-state output current Input current Quiescent current Min 4.5 to 5.5 2.0 4.5 to 5.5 — 4.5 4.4 4.5 4.18 4.5 — 4.5 — Ta = 25°C Typ Max — — — 0.8 — — — — — 0.1 — 0.26 Ta = –40 to+85°C Min Max 2.0 — — 0.8 4.4 — 4.13 — — 0.1 — 0.33 Unit Test Conditions V V V Vin = VIH or VIL IOH = –20 µA IOH = –6 mA Vin = VIH or VIL IOL = 20 µA IOL = 6 mA V IOZ 5.5 — — ±0.5 — ±5.0 µA Iin ICC 5.5 5.5 — — — — ±0.1 4.0 — — ±1.0 40 µA µA Vin = VIH or VIL, Vout = VCC or GND Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA Switching Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Item Propagation delay time Output enable time Output disable time Output rise/fall time Input capacitance Symbol VCC (V) tPHL tPLH tZL tZH tLZ tHZ tTLH / tTHL Cin 4.5 4.5 4.5 4.5 4.5 4.5 4.5 — Min — — — — — — — — Ta = 25°C Ta = –40 to +85°C Typ Max Min Max 11 20 — 25 9 20 — 25 13 30 — 38 12 30 — 38 14 30 — 38 17 30 — 38 4 12 — 15 5 10 — 10 Unit Test Conditions ns ns ns ns pF Test Circuit Input Pulse Generator Zout = 50 Ω VCC See Function Table VCC 1G, 2G Output 1 kΩ 1Y1 to 2Y4 1A1 to 2A4 Note : 1. CL includes probe and jig capacitance. Rev.2.00 Mar 30, 2006 page 3 of 6 S1 OPEN GND CL = 50 pF VCC TEST t PLH / t PHL S1 OPEN t ZH/ t HZ t ZL / t LZ GND VCC HD74HCT244 Waveforms • Waveform – 1 tr tf 90 % 1.3 V Input A VCC 90 % 1.3 V 10 % 10 % 90 % Output Y 1.3 V 10 % tTLH Input G VOH 90 % 1.3 V 10 % • Waveform – 2 0V tPHL tPLH tf VOL tTHL tr 90 % 1.3 V VCC 90 % 1.3 V 10 % tZL 10 % 0V tLZ VOH 1.3 V Waveform – A tZH Waveform – B 10 % tHZ 1.3 V 90 % VOL VOH VOL Notes : 1. Input waveform : PRR ≤ 1 MHz, duty cycle 50%, tr ≤ 6 ns, tf ≤ 6 ns 2. Waveform– A is for an output with internal conditions such that the output is low except when disabled by the output control. 3. Waveform– B is for an output with internal conditions such that the output is high except when disabled by the output control. 4. The output are measured one at a time with one transition per measurement. Rev.2.00 Mar 30, 2006 page 4 of 6 HD74HCT244 Package Dimensions JEITA Package Code P-DIP20-6.3x24.5-2.54 RENESAS Code PRDP0020AC-B Previous Code DP-20NEV MASS[Typ.] 1.26g D 11 E 20 1 10 b3 0.89 A1 A Z Reference Symbol L e1 D E A A1 bp b3 c θ e Z L θ bp e c e1 ( Ni/Pd/Au plating ) JEITA Package Code P-SOP20-7.5x12.8-1.27 RENESAS Code PRSP0020DC-A *1 Previous Code FP-20DBV Dimension in Millimeters Min Nom Max 7.62 24.50 25.40 6.30 7.00 5.08 0.51 0.40 0.48 0.56 1.30 0.19 0.25 0.31 0° 15° 2.29 2.54 2.79 1.27 2.54 MASS[Typ.] 0.52g D F 20 NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" @ DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT @ INCLUDE TRIM OFFSET. 11 HE c *2 E bp Index mark Terminal cross section ( Ni/Pd/Au plating ) 1 e *3 bp x M L1 A Z Reference Dimension in Millimeters Symbol 10 A1 θ L y Detail F Rev.2.00 Mar 30, 2006 page 5 of 6 D E A2 A1 A bp b1 c c1 θ HE e x y Z L L1 Min Nom Max 12.80 13.2 7.50 0.10 0.20 0.30 2.65 0.34 0.40 0.46 0.20 0.25 0.30 0° 8° 10.00 10.40 10.65 1.27 0.12 0.15 0.935 0.40 0.70 1.27 1.45 HD74HCT244 JEITA Package Code P-SOP20-5.5x12.6-1.27 RENESAS Code PRSP0020DD-B *1 Previous Code FP-20DAV MASS[Typ.] 0.31g D NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. F 20 11 *2 c E HE bp Index mark Terminal cross section ( Ni/Pd/Au plating ) 1 10 e Z *3 bp x Reference Dimension in Millimeters Symbol M A L1 A1 θ y L Detail F JEITA Package Code P-TSSOP20-4.4x6.5-0.65 RENESAS Code PTSP0020JB-A *1 Previous Code TTP-20DAV D E A2 A1 A bp b1 c c1 θ HE e x y Z L L1 Min Nom Max 12.60 13.0 5.50 0.00 0.10 0.20 2.20 0.34 0.40 0.46 0.15 0.20 0.25 0° 8° 7.50 7.80 8.00 1.27 0.12 0.15 0.80 0.50 0.70 0.90 1.15 MASS[Typ.] 0.07g D F 20 NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. 11 c HE *2 E bp Terminal cross section ( Ni/Pd/Au plating ) Index mark Reference Dimension in Millimeters Symbol 1 e bp L1 x M A Z 10 *3 A1 θ L y Detail F Rev.2.00 Mar 30, 2006 page 6 of 6 D E A2 A1 A bp b1 c c1 θ HE e x y Z L L1 Min Nom Max 6.50 6.80 4.40 0.03 0.07 0.10 1.10 0.15 0.20 0.25 0.10 0.15 0.20 0° 8° 6.20 6.40 6.60 0.65 0.13 0.10 0.65 0.4 0.5 0.6 1.0 Sales Strategic Planning Div. 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