HD74HC251 1 of 8 Data Selectors/Multiplexers (with 3-state outputs) REJ03D0599–0200 (Previous ADE-205-476) Rev.2.00 Jan 31, 2006 Description This multiplexer features both true (Y) and complement (W) outputs as well as a strobe input. The strobe must be at a low logic level to enable this device. When the strobe input is high, both outputs are in the high impedance state. When enabled, address information on the data select inputs determine which data input is routed to the Y and W outputs. Features • • • • • • High Speed Operation: tpd (A, B, C to Y) = 20 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 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) HD74HC251P DILP-16 pin PRDP0016AE-B (DP-16FV) P — HD74HC251FPEL SOP-16 pin (JEITA) PRSP0016DH-B (FP-16DAV) FP EL (2,000 pcs/reel) PRSP0016DG-A RP (FP-16DNV) Note: Please consult the sales office for the above package availability. HD74HC251RPEL SOP-16 pin (JEDEC) EL (2,500 pcs/reel) Function Table Inputs Select C B A X X X L L L L L H L H L L H H H L L H L H H H L H H H Notes: 1. H: high level, L: low level, X: irrelevant 2. Z; high impedance (off-state) 3. D0 through D7; the level of the respective D input. Rev.2.00 Jan 31, 2006 page 1 of 8 Outputs Strobe S H L L L L L L L L Y Z D0 D1 D2 D3 D4 D5 D6 D7 W Z D0 D1 D2 D3 D4 D5 D6 D7 HD74HC251 Pin Arrangement 3 1 2 2 D2 1 3 0 16 VCC D3 D4 15 4 D1 D5 14 5 4 D0 D6 13 6 Y 5 Y D7 12 7 W 6 W A 11 A Strobe 7 S B 10 B GND 8 Data inputs Data inputs Outputs C 9 (Top view) Rev.2.00 Jan 31, 2006 page 2 of 8 C Data select HD74HC251 Logic Diagram A C B D0 D1 D2 Strobe D3 VCC D4 Y D5 VCC D6 W D7 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 ±25 ±50 500 –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 Jan 31, 2006 page 3 of 8 HD74HC251 Recommended Operating Conditions Item Supply voltage Input / Output voltage Operating temperature Input rise / fall time*1 Symbol VCC VIN, VOUT Ta tr, tf Ratings 2 to 6 0 to VCC –40 to 85 0 to 1000 0 to 500 0 to 400 Unit V V °C ns Conditions VCC = 2.0 V VCC = 4.5 V VCC = 6.0 V Notes: 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics. Electrical Characteristics Item Input voltage Output voltage Symbol VCC (V) Ta = 25°C Typ Max — — — — — — Ta = –40 to+85°C Unit Min Max 1.5 — V 3.15 — 4.2 — VIH 2.0 4.5 6.0 Min 1.5 3.15 4.2 VIL 2.0 4.5 6.0 — — — — — — 0.5 1.35 1.8 — — — 0.5 1.35 1.8 V VOH 2.0 4.5 6.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 6.0 1.9 4.4 5.9 4.18 5.68 — — — — — — 2.0 4.5 6.0 — — 0.0 0.0 0.0 — — — — — — — — 0.1 0.1 0.1 0.26 0.26 ±0.5 1.9 4.4 5.9 4.13 5.63 — — — — — — — — — — — 0.1 0.1 0.1 0.33 0.33 ±5.0 V 6.0 6.0 — — — — ±0.1 4.0 — — ±1.0 40 VOL Off-state output current Input current IOZ Quiescent supply current ICC Iin Rev.2.00 Jan 31, 2006 page 4 of 8 V Test Conditions Vin = VIH or VIL IOH = –20 µA Vin = VIH or VIL IOH = –4 mA IOH = –5.2 mA IOL = 20 µA IOL = 4 mA IOL = 5.2 mA µA Vin = VIH or VIL, Vout = VCC or GND µA Vin = VCC or GND µA Vin = VCC or GND, Iout = 0 µA HD74HC251 Switching Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Item Ta = 25°C Min Typ Max — — 205 — 20 41 — — 35 — — 205 — 20 41 — — 35 — — 195 — 17 39 — — 33 — — 185 — 17 37 — — 31 — — 150 — 11 30 — — 26 — — 145 Symbol VCC (V) Propagation delay time tPLH tPHL 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 tPLH tPHL tPLH tPHL tPLH tPHL Output enable time tZH tZL tZH tZL 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 — tHZ tLZ Output disable time tHZ tLZ Output rise/fall time tTLH tTHL Input capacitance Cin — — — — — — — — — — — — 11 — — 12 — — 12 — — 5 — 5 29 25 220 44 37 195 39 33 75 15 13 10 Ta = –40 to +85°C Unit Test Conditions Min Max — 255 ns A, B or C to Y — 51 — 43 — 255 ns A, B or C to W — 51 — 43 — 245 ns Data to Y — 49 — 42 — 230 ns Data to W — 46 — 39 — 190 ns strobe to W RL = 1 kΩ — 38 — 33 — 180 ns strobe to Y RL = 1 kΩ — — — — — — — — — — — — 36 31 275 55 47 245 49 42 90 19 16 10 ns strobe to W RL = 1 kΩ ns strobe to Y RL = 1 kΩ ns pF Test Circuit VCC VCC Output Input Pulse Generator Zout = 50 Ω See Function Table S 1 kΩ Y OPEN GND D0 to D7 Output A B CL = 50 pF 1 kΩ W C Note : 1. CL includes probe and jig capacitance. Rev.2.00 Jan 31, 2006 page 5 of 8 S1 VCC S1 OPEN GND CL = 50 pF VCC TEST t PLH / t PHL S1 OPEN t ZH/ t HZ t ZL / t LZ GND VCC HD74HC251 Waveforms • Waveform – 1 tr tf 90 % 50 % Input VCC 90 % 50 % 10 % 10 % t PLH t PHL 90 % Same-phase output 0V 50 % 10 % 50 % 10 % t TLH t PHL t PLH 90 % 50 % 10 % 50 % 10 % VOL tr 90 % 50 % 10 % t ZL Input G VOH t TLH t THL tf VOL t THL 90 % Inverse-phase output • Waveform – 2 VOH 90 % VCC 90 % 50 % 10 % 0V t LZ VOH 50 % Waveform – A t ZH Waveform – B 10 % t HZ 50 % 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 Jan 31, 2006 page 6 of 8 HD74HC251 Package Dimensions JEITA Package Code P-DIP16-6.3x19.2-2.54 RENESAS Code PRDP0016AE-B MASS[Typ.] 1.05g Previous Code DP-16FV D 9 E 16 1 8 b3 0.89 Z A1 A Reference Symbol L e Nom θ c e1 D 19.2 E 6.3 JEITA Package Code P-SOP16-5.5x10.06-1.27 RENESAS Code PRSP0016DH-B *1 Previous Code FP-16DAV 7.4 A1 0.51 b p 0.40 b 3 0.48 0.56 1.30 c 0.19 θ 0° e 2.29 0.25 0.31 2.54 2.79 15° 1.12 L 2.54 MASS[Typ.] 0.24g NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. D F 16 20.32 5.06 Z ( Ni/Pd/Au plating ) Max 7.62 1 A bp e Dimension in Millimeters Min 9 c HE *2 E bp Index mark Reference Symbol Terminal cross section ( Ni/Pd/Au plating ) 1 Z *3 bp Nom D 10.06 E 5.50 Max 10.5 A2 8 e Dimension in Millimeters Min x A1 M 0.00 0.10 0.20 0.34 0.40 0.46 0.15 0.20 0.25 7.80 8.00 A L1 2.20 bp b1 c A c A1 θ y L Detail F 1 θ 0° HE 7.50 e 1.27 x 0.12 y 0.15 0.80 Z L L Rev.2.00 Jan 31, 2006 page 7 of 8 8° 0.50 1 0.70 1.15 0.90 HD74HC251 JEITA Package Code P-SOP16-3.95x9.9-1.27 RENESAS Code PRSP0016DG-A *1 Previous Code FP-16DNV MASS[Typ.] 0.15g D NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. F 16 9 c *2 Index mark HE E bp Reference Symbol Terminal cross section ( Ni/Pd/Au plating ) Dimension in Millimeters Min Nom Max D 9.90 10.30 E 3.95 A2 8 1 Z e *3 bp x A1 0.10 0.14 0.25 0.34 0.40 0.46 0.15 0.20 0.25 6.10 6.20 1.75 A M L1 bp b1 c A c A1 θ L y Detail F 1 θ 0° HE 5.80 e 1.27 x 0.25 y 0.15 0.635 Z 0.40 L L Rev.2.00 Jan 31, 2006 page 8 of 8 8° 1 0.60 1.08 1.27 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. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage. 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