The LM1458 and the LM1558 are general purpose dual operational amplifiers. The two amplifiers share a common bias network and power supply leads. Otherwise, their operation is completely independent. The LM1458 is identical to the LM1558 except that the LM1458 has its specifications guaranteed over the temperature range from 0*C to +70*C instead of -55*C to +125*C.
OP AMP, DUAL COMPENSATED, SMD, 1458; Op Amp Type:General Purpose; No. of Amplifiers:2; Bandwidth:1MHz; No. of Pins:8; Operating Temperature Range:0°C to +70°C; SVHC:No SVHC (15-Dec-2010); Amplifier Type:Compensated; Base Number:1458; Gain Bandwidth:1MHz; IC Generic Number:1458; IC Temperature Range:Commercial; Input Offset Voltage Max:6mV; Logic Function Number:1458; Operating Temperature Max:70°C; Operating Temperature Min:0°C; Operational Amplifier Features:Internally Compensated; Package / Case:SOIC; Slew Rate:0.5V/µs; Supply Voltage + Nom:15V; Supply Voltage Max:36V; Supply Voltage Min:6V; Termination Type:SMD