MC34C87

Specifications

Rating	Symbol	Value	Unit
Power Supply Voltage	VCC	7	V
DC Input Voltage	Vin	1.5 to VCC + 1.5	V
DC Output Voltage*	Vout	0.5 to VCC + 0.5	V
DC Output Current, per Pin	Iout	150	mA
DC VCC or GND Current, per Pin	IDD	150	mA
Storage Temperature	Tstg	65 to + 150
Power Dissipation	PD	500	mW
ESD (Human Body Model)		2000	V

Description

The MC34C87 is a quad differential line driver designed for digital data transmission over balanced lines. The MC34C87 meets all the requirements of standard EIA422A while retaining the lowpower characteristics of CMOS.

The MC34C87 accepts TTL or CMOS input levels and translates these to EIA422A output level. This part uses special output circuitry that enables the individual drivers to power down without loading down the bus. The MC34C87 also includes special circuitry which will set the outputs to a high impedance mode during power up or down, preventing spurious glitches. Each enable pin controls two drivers.

The MC34C87 is pin compatible with the MC3487.

All pins of MC34C87 are protected against damage due to electrostatic discharges.

• Maximum Power Supply Current: 3 mA
• 2000 V ESD Protection on the Inputs and the Outputs
• TTL/CMOS Input Compatible
• Typical Propagation Delay: 6 ns
• Typical Output Skew: 1 ns
• Meets VO = 6.0 V (and VO = 0.25 V), VCC = 0 V, IO < 100 µA
  Requirement
• Operation from Single 5 V Supply
• High Impedance Mode for Outputs Connected to System Buses