MC10H125_06 Datasheet, PDF (4/8 Pages) ON Semiconductor – Quad MECL−to−TTL Translator

MC10H125
Table 4. AC CHARACTERISTICS
0°
25°
75°
Symbol
Characteristic
Min
Max
Min
Max
Min
Max
Unit
t_pd
Propagation Delay
t_r
Rise Time (Note 5)
t_f
Fall Time (Note 5)
0.8
3.3
0.85
3.35
0.9
3.4
ns
0.3
1.2
0.3
1.2
0.3
1.2
ns
0.3
1.2
0.3
1.2
0.3
1.2
ns
NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit
board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared
operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit
values are applied individually under normal operating conditions and not valid simultaneously.
5. Output Voltage = 1.0 V to 2.0 V. R_L = 500 W to GND and C_L = 25 pF to GND. Refer to Figure 1.
APPLICATION
TTL RECEIVER
CHARACTERISTIC TEST
*C_L includes
C_L*
fixture
capacitance
R_L
AC TEST LOAD
GND
Figure 1. TTL Output Loading Used for Device Evaluation
APPLICATION INFORMATION
The MC10H125 incorporates differential inputs and
Schottky TTL “totem pole” outputs. Differential inputs
allow for use as an inverting/non−inverting translator or as
a differential line receiver. The V_BB reference voltage is
available on Pin 1 for use in single−ended input biasing. The
outputs of the MC10H125 go to a low−logic level whenever
the inputs are left floating, and a high−logic output level is
achieved with a minimum input level of 150 mV_p−p.
An advantage of this device is that MECL−level
information can be received, via balanced twisted pair lines,
in the TTL equipment. This isolates the MECL−logic from
the noisy TTL environment. Power supply requirements are
ground, +5.0 V and −5.2 V.
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